SciBlogs

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August ’14 – NZ blogs sitemeter ranking Ken Perrott Sep 01

No Comments

 
Hager
Bloggers in the thick of election campaign? Image Credit: Against the Current


PLEASE NOTE: Sitemeter is playing up again making it impossible to automatically get the stats using the normal process. I have done a manual work around but it was still impossible to get the stats for a number of blogs that I list below. Maybe more bloggers will shift to StatCounter or other counter.

No stats could be found for these blogs:

Blog
Works in progress
Weakly Whirled News
Two Minutes Sport
Wysiwygpurple’s Blog
Stats Chat
Social Media and the 2014 General Election
Love your work
Today is my birthday
This Mum Rocks
Sportsfreak
Infectious thoughts
Science Behind the Curtain
Grumpollie
Louis’ Outlook
West City Darts
Woodleigh Nursery
Kyle MacDonald
A conservative perspective
Save our schools NZ

There are now over 300 blogs on the list, although I am weeding out those which are no longer active or have removed public access to sitemeters. (Let me know if I weed out yours by mistake, or get your stats wrong).

Every month I get queries from people wanting their own blog included. I encourage and am happy to respond to queries but have prepared a list of frequently asked questions (FAQs) people can check out. Have a look at NZ Blog Rankings FAQ. This is particularly helpful to those wondering how to set up sitemeters.

Please note, the system is automatic and relies on blogs having sitemeters which allow public access to the stats.

Here are the rankings of New Zealand blogs with publicly available statistics for August 2014. Ranking is by visit numbers. I have listed the blogs in the table below, together with monthly visits and page view numbers.

Meanwhile I am still keen to hear of any other blogs with publicly available sitemeter or visitor stats that I have missed. Contact me if you know of any or wish help adding publicly available stats to your bog.

You can see data for previous months at Blog Ranks

Subscribe to NZ Blog Rankings

Subscribe to NZ blog rankings by Email

Find out how to get Subscription & email updates

Rank Blog Visits/month Page Views/month
1 Whale oil beef hooked 3437487 4945964
2 Kiwiblog 597964 975844
3 The Daily Blog 416374 667411
4 The Standard 336201 717234
5 Transport Blog 125219 1258049
6 The Dim-Post 111640 149215
7 Throng New Zealand 49872 92859
8 Ultimate Student 43210 58570
9 Sciblogs 41677 53371
10 Liturgy 34566 46600
11 No Right Turn 32256 44240
12 Keeping Stock 28111 40128
13 NewZeal 26532 36882
14 No Minister 25364 33807
15 Homepaddock 24229 33753
16 Music of sound 14432 19760
17 13th Floor 13539 18798
18 The REAL Steve Gray 13371 19368
19 Imperator Fish 12367 16438
20 Offsetting Behaviour 11659 16748
21 Fields of Blood 11606 18040
22 TVHE 11365 13455
23 Liberation 11067 15955
24 Cycling in Christchurch 10666 13439
25 Social Media & the 2014 Election 9706 13495
26 Keith Johnson Wellington NZ 9577 9924
27 Tikorangi The Jury Garden 9432 13110
28 Cut your hair 9090 9208
29 Open Parachute 8670 11268
30 MandM 8337 9597
31 Dark Brightness 8155 8265
32 Bill Bennett 8102 12488
33 Right Reason 8021 12809
34 Hot Topic 7750 11428
35 Rugby Tips 7703 9268
36 Lance Wiggs 7625 8757
37 Aotearoa: A wider perspective 7403 9501
38 Talking Auckland 6863 9130
39 Lindsay Mitchell 6723 8782
40 Autism & Oughtisms 6177 6227
41 Matte Shot 5932 9602
42 Anglican down under 5829 8440
43 Reading the maps 5232 6923
44 Home education Foundation 5127 6764
45 Quote Unquote 4770 5524
46 Mousehouse 4475 7648
47 Teaching the Teacher 4218 5526
48 Scepticon 4175 4653
49 Avalon’s Guide: Emigrate to New Zealand 3866 5149
50 Kiwi Cakes 3772 5264
51 New Zealand Conservative 3523 4768
52 In the back of the net 3467 5446
53 The Woolshed Wargamer 2970 5640
54 Pdubyah – a life just as ordinary 2791 4111
55 Vomkrieg 2360 4193
56 PM of NZ 2293 2800
57 Crime Watch 2286 3443
58 Chris no-frills 2197 3117
59 Rodney’s Aviation Ramblings 2186 2973
60 My thinks 2176 2429
61 Canterbury Atheists 2154 2463
62 Waiology 2065 2495
63 Otagosh 2061 3295
64 Eye on the ICR 2021 2603
65 Open Parachute @ SciBlogs 1950 2149
66 Windy Hilltops 1833 2935
67 Episto 1584 2069
68 Man of Errors 1411 1599
69 Sustain:if:able Kiwi 1394 2143
70 Blessed Economist 1319 1620
71 Socialist Aotearoa 1256 1465
72 Put ‘em all on an island 1249 1545
73 Scotty Donaldson 1183 1401
74 james lin’s blog 1138 1160
75 Life Behind the IRon Drape 1113 1644
76 Michael Jeans 1086 1449
77 Helen Heath 1065 1312
78 Code for Life 1038 1205
79 ICT Teaching and Learning 1034 1254
80 A communist at large 1020 1432
81 ROI Marketing 1019 1432
82 Undeniably Atheist 1010 1235
83 Life is not a race to be finished first 969 1360
84 Capitalism is bad 924 1766
85 Stitchbird 920 1458
85 Brad Heap 920 1090
86 OracleNZ by Francisco Munoz Alvarez 885 1201
87 Life of Andrew 880 989
88 Tararua District Library 865 1235
89 misc.ience @ Sciblogs 855 952
90 Anne Free Spirit 840 2610
90 Tales from a Café Chick# 840 1320
91 AmeriNZ 832 1111
92 Ideologically impure 809 921
93 roarprawn 795 971
94 A Bee of a Certain Age 772 886
95 One Furious Llama 760 893
96 Media Sport and Other Rantings 728 830
97 Halfdone 661 788
98 Room 5 @ Melville Intermediate School 630 780
99 Show your workings 625 809
100 Goings on at the Madbush Farm 611 767
101 Notes from the bartender 598 697
102 sticK 577 717
103 Skeptiocon @ Sciblogs 563 616
104 True Paradigm 555 704
105 Kidney Punch  548 602
106 Room One @ Auroa School 540 1740
107 From the Earth’s End 537 707
108 Polit Ecol 509 584
109 White & Black 486 674
110 Brennan McDonald 483 559
111 Jo Blogs 465 746
112 Hitting Metal With A Hammer 461 595
113 Exile in New zealand 459 594
114 Stratford Aerodrome 426 599
115 AnneKcam
420 930
116 Tauranga Blog 405 453
117 The Fundy Post 398 519
118 Get Out Gertrude! 392 500
119 Riddled 388 527
120 Four seasons in one 375 424
121 Islamnz.com 368 707
122 eyeCONTACT 367 559
123 Creative Voice# 360 480
124 Family integrity 335 399
125 Taradale Blog# 330 480
125 Glennis’s Blog Page# 330 450
126 Anarchia 326 377
127 Artichoke 320 391
128 goNZo Freakpower Brains Trust 319 347
129 Samuel Dennis 311 326
130 Glenview 9 310 353
130 Spatula Forum 310 376
131 SmallTorque 309 350
132 Cimba7200’s thoughts 309 415
133 The IT Countrey Justice 301 388
134 The Gentically Insane 300 360
135 Science in a van 295 432
136 Software development and stuff 288 304
137 Kutarere’s Blog 282 320
138 Perissodactyla 281 317
139 Webweaver’s world 274 320
140 Mountains of Our Minds# 270 360
141 The Genetically Insane 265 335
142 Ruggerblogger 260 445
143 kiwi simplexity 252 276
144 MartinIsti Blog 247 431
145 $100 Dialysis 246 285
146 Moving the crowd 240 360
146 Upstage 240 379
146 Derek’s blog 240 367
147 Rest Area 300m 238 284
148 Toni Twiss 225 226
149 Sam Books and Thoughts 216 261
150 Manaia Kindergarten 210 540
151 Nelsonian’s life 210 450
151 Dad4justice 207 225
152 Sharlene says 203 398
153 Aphrodite rises 201 255
154 The Little Waaagh! That Could 200 244
155 Unity Blog 196 248
156 Write to travel 189 248
157 ElephaNZa 182 185
158 King’s High School Library 180 360
158 NZ First Youth 180 236
159 Pointless and adsurb 175 282
160 Augmented Ether 173 205
161 kiwiincanberra 172 222
161 Wokarella 172 222
162 High voltage learning during the Christchurch earthquakes 167 237
163 University of Otago, Law Library Blog 157 190
164 Virtual North 150 210
165 Politicalisation 146 162
165 You’re Underthinking 146 151
166 At home with Rose 140 167
167 ZNO 128 167
168 Canvassing for opinion 126 171
169 The Well read Kitty 125 147
169 Dragonsinger 125 146
170 Pt England Scribes 120 120
170 Korero Pt England 120 330
170 Digital learning 120 180
170 Nine Inch Nails 120 150
170 Recess Monkey 120 136
171 Something Interesting to read 119 156
172 jo russ photo diary 117 140
172 Looking in the square 117 132
173 Kiwidollar.com 110 135
173 Millenium X 110 186
174 Creative Collision 107 115
175 UpsideBackwards 103 112
176 Prior Knowledge 102 114
177 Shelly van Soest Artist 100 119
178 Journey to a mini me 96 119
178 New Zealand Indian Fine Arts Society 96 120
179 Lost Soul 95 115
180 Springston School Library Blog 93 134
181 Busy Peas 91 104
182 Making IT Happen 90 120
182 The Catalyst 90 120
183 Carolyn’s blog 87 129
184 Whitireia Journalism School 78 84
185 round design 69 75
186 Social Policy Bonds Blog 65 72
187 The First Fifteen @ TIS 63 154
188 Football Tragic NZ 60 60
188 John Macilree’s Weblog# 60 60
188 Room 24, 2012 60 90
188 James McKerrow – Surveyor 1834-1919# 60 60
189 John Macilree’s Blog 54 63
190 Fundamental 52 125
190 Oracle of Okarito 52 91
191 Neil Stockley 51 65
192 Discovery Time 46 63
193 The Secret Life of Russ 44 49
194 New Zealand female Firefighter calendar 42 63
195 Ellie Great 41 45
196 Moments of Whimsy 40 48
197 Einstein Music Journal# 38 45
198 TimG_Oz Blog 34 37
199 Frontlawn 33 57
200 ICTPD 30 30
200 Sleeping with books 30 30
200 Kiwi Chronicles 30 30
200 But Now 30 60
200 Anticipating future impacts 30 60
200 The Official Ebenezer Teichelmann Blog# 30 30
200 global village governance 30 39
201 Nathanael Baker 28 30
201 Mad Young Thing 28 33
202 No Mum is an Island 27 35
203 SageNZ 22 28
204 Palmerston North.ifo 19 65
205 Relatively science 18 23
206 Blair for Mayor 16 18
207 ah! New Year’s Resolution 15 16
207 Green is good 15 17
208 Tangled up in purple 14 18
208 LoveColour Blog 14 19
209 Robtuckerpix’s Blog  13 13
209 SilverSpikes Photography  13 21
209 Kiwiaventuras 13 16
210 Rambling Reflections 12 12
211 ZL2UCX’s Blog 11 11
211 In this moment 11 18
212 pasture Harmonies 9 9
212 Think Beyond 9 9
212 A developing Geneticist 9 10
212 DMP Lead Free 9 10
213 Porirua EMO 8 8
213 KJT 7 13
213 Moderation Blog 7 7
213 Unknown Future 7 7
214 ObservatioNZ 6 7
214 TraLIS blog 6 7
215 Uncensored 5 6
216 Liminal Spaces 4 4
216 Roger Nome’s progressive Politics 4 5
216 Fuller’s watch# 4 7
217 Bob McKerrow – Wayfarer 2 2
217 Here I stand 2 2
217 Scott & Sarah Kennedy 2 2
218 amiria [blog] 1 1
218 Born on State Highway 1 1 1
218 Yea or Nay 1 1
218 Mars 2 Earth 1 1

August ’14 – NZ blogs sitemeter ranking Ken Perrott Sep 01

No Comments

 
Hager
Bloggers in the thick of election campaign? Image Credit: Against the Current


PLEASE NOTE: Sitemeter is playing up again making it impossible to automatically get the stats using the normal process. I have done a manual work around but it was still impossible to get the stats for a number of blogs that I list below. Maybe more bloggers will shift to StatCounter or other counter.

No stats could be found for these blogs:

Blog
Works in progress
Weakly Whirled News
Two Minutes Sport
Wysiwygpurple’s Blog
Stats Chat
Social Media and the 2014 General Election
Love your work
Today is my birthday
This Mum Rocks
Sportsfreak
Infectious thoughts
Science Behind the Curtain
Grumpollie
Louis’ Outlook
West City Darts
Woodleigh Nursery
Kyle MacDonald
A conservative perspective
Save our schools NZ

There are now over 300 blogs on the list, although I am weeding out those which are no longer active or have removed public access to sitemeters. (Let me know if I weed out yours by mistake, or get your stats wrong).

Every month I get queries from people wanting their own blog included. I encourage and am happy to respond to queries but have prepared a list of frequently asked questions (FAQs) people can check out. Have a look at NZ Blog Rankings FAQ. This is particularly helpful to those wondering how to set up sitemeters.

Please note, the system is automatic and relies on blogs having sitemeters which allow public access to the stats.

Here are the rankings of New Zealand blogs with publicly available statistics for August 2014. Ranking is by visit numbers. I have listed the blogs in the table below, together with monthly visits and page view numbers.

Meanwhile I am still keen to hear of any other blogs with publicly available sitemeter or visitor stats that I have missed. Contact me if you know of any or wish help adding publicly available stats to your bog.

You can see data for previous months at Blog Ranks

Subscribe to NZ Blog Rankings

Subscribe to NZ blog rankings by Email

Find out how to get Subscription & email updates

Rank Blog Visits/month Page Views/month
1 Whale oil beef hooked 3437487 4945964
2 Kiwiblog 597964 975844
3 The Daily Blog 416374 667411
4 The Standard 336201 717234
5 Transport Blog 125219 1258049
6 The Dim-Post 111640 149215
7 Throng New Zealand 49872 92859
8 Ultimate Student 43210 58570
9 Sciblogs 41677 53371
10 Liturgy 34566 46600
11 No Right Turn 32256 44240
12 Keeping Stock 28111 40128
13 NewZeal 26532 36882
14 No Minister 25364 33807
15 Homepaddock 24229 33753
16 Music of sound 14432 19760
17 13th Floor 13539 18798
18 The REAL Steve Gray 13371 19368
19 Imperator Fish 12367 16438
20 Offsetting Behaviour 11659 16748
21 Fields of Blood 11606 18040
22 TVHE 11365 13455
23 Liberation 11067 15955
24 Cycling in Christchurch 10666 13439
25 Social Media & the 2014 Election 9706 13495
26 Keith Johnson Wellington NZ 9577 9924
27 Tikorangi The Jury Garden 9432 13110
28 Cut your hair 9090 9208
29 Open Parachute 8670 11268
30 MandM 8337 9597
31 Dark Brightness 8155 8265
32 Bill Bennett 8102 12488
33 Right Reason 8021 12809
34 Hot Topic 7750 11428
35 Rugby Tips 7703 9268
36 Lance Wiggs 7625 8757
37 Aotearoa: A wider perspective 7403 9501
38 Talking Auckland 6863 9130
39 Lindsay Mitchell 6723 8782
40 Autism & Oughtisms 6177 6227
41 Matte Shot 5932 9602
42 Anglican down under 5829 8440
43 Reading the maps 5232 6923
44 Home education Foundation 5127 6764
45 Quote Unquote 4770 5524
46 Mousehouse 4475 7648
47 Teaching the Teacher 4218 5526
48 Scepticon 4175 4653
49 Avalon’s Guide: Emigrate to New Zealand 3866 5149
50 Kiwi Cakes 3772 5264
51 New Zealand Conservative 3523 4768
52 In the back of the net 3467 5446
53 The Woolshed Wargamer 2970 5640
54 Pdubyah – a life just as ordinary 2791 4111
55 Vomkrieg 2360 4193
56 PM of NZ 2293 2800
57 Crime Watch 2286 3443
58 Chris no-frills 2197 3117
59 Rodney’s Aviation Ramblings 2186 2973
60 My thinks 2176 2429
61 Canterbury Atheists 2154 2463
62 Waiology 2065 2495
63 Otagosh 2061 3295
64 Eye on the ICR 2021 2603
65 Open Parachute @ SciBlogs 1950 2149
66 Windy Hilltops 1833 2935
67 Episto 1584 2069
68 Man of Errors 1411 1599
69 Sustain:if:able Kiwi 1394 2143
70 Blessed Economist 1319 1620
71 Socialist Aotearoa 1256 1465
72 Put ‘em all on an island 1249 1545
73 Scotty Donaldson 1183 1401
74 james lin’s blog 1138 1160
75 Life Behind the IRon Drape 1113 1644
76 Michael Jeans 1086 1449
77 Helen Heath 1065 1312
78 Code for Life 1038 1205
79 ICT Teaching and Learning 1034 1254
80 A communist at large 1020 1432
81 ROI Marketing 1019 1432
82 Undeniably Atheist 1010 1235
83 Life is not a race to be finished first 969 1360
84 Capitalism is bad 924 1766
85 Stitchbird 920 1458
85 Brad Heap 920 1090
86 OracleNZ by Francisco Munoz Alvarez 885 1201
87 Life of Andrew 880 989
88 Tararua District Library 865 1235
89 misc.ience @ Sciblogs 855 952
90 Anne Free Spirit 840 2610
90 Tales from a Café Chick# 840 1320
91 AmeriNZ 832 1111
92 Ideologically impure 809 921
93 roarprawn 795 971
94 A Bee of a Certain Age 772 886
95 One Furious Llama 760 893
96 Media Sport and Other Rantings 728 830
97 Halfdone 661 788
98 Room 5 @ Melville Intermediate School 630 780
99 Show your workings 625 809
100 Goings on at the Madbush Farm 611 767
101 Notes from the bartender 598 697
102 sticK 577 717
103 Skeptiocon @ Sciblogs 563 616
104 True Paradigm 555 704
105 Kidney Punch  548 602
106 Room One @ Auroa School 540 1740
107 From the Earth’s End 537 707
108 Polit Ecol 509 584
109 White & Black 486 674
110 Brennan McDonald 483 559
111 Jo Blogs 465 746
112 Hitting Metal With A Hammer 461 595
113 Exile in New zealand 459 594
114 Stratford Aerodrome 426 599
115 AnneKcam
420 930
116 Tauranga Blog 405 453
117 The Fundy Post 398 519
118 Get Out Gertrude! 392 500
119 Riddled 388 527
120 Four seasons in one 375 424
121 Islamnz.com 368 707
122 eyeCONTACT 367 559
123 Creative Voice# 360 480
124 Family integrity 335 399
125 Taradale Blog# 330 480
125 Glennis’s Blog Page# 330 450
126 Anarchia 326 377
127 Artichoke 320 391
128 goNZo Freakpower Brains Trust 319 347
129 Samuel Dennis 311 326
130 Glenview 9 310 353
130 Spatula Forum 310 376
131 SmallTorque 309 350
132 Cimba7200’s thoughts 309 415
133 The IT Countrey Justice 301 388
134 The Gentically Insane 300 360
135 Science in a van 295 432
136 Software development and stuff 288 304
137 Kutarere’s Blog 282 320
138 Perissodactyla 281 317
139 Webweaver’s world 274 320
140 Mountains of Our Minds# 270 360
141 The Genetically Insane 265 335
142 Ruggerblogger 260 445
143 kiwi simplexity 252 276
144 MartinIsti Blog 247 431
145 $100 Dialysis 246 285
146 Moving the crowd 240 360
146 Upstage 240 379
146 Derek’s blog 240 367
147 Rest Area 300m 238 284
148 Toni Twiss 225 226
149 Sam Books and Thoughts 216 261
150 Manaia Kindergarten 210 540
151 Nelsonian’s life 210 450
151 Dad4justice 207 225
152 Sharlene says 203 398
153 Aphrodite rises 201 255
154 The Little Waaagh! That Could 200 244
155 Unity Blog 196 248
156 Write to travel 189 248
157 ElephaNZa 182 185
158 King’s High School Library 180 360
158 NZ First Youth 180 236
159 Pointless and adsurb 175 282
160 Augmented Ether 173 205
161 kiwiincanberra 172 222
161 Wokarella 172 222
162 High voltage learning during the Christchurch earthquakes 167 237
163 University of Otago, Law Library Blog 157 190
164 Virtual North 150 210
165 Politicalisation 146 162
165 You’re Underthinking 146 151
166 At home with Rose 140 167
167 ZNO 128 167
168 Canvassing for opinion 126 171
169 The Well read Kitty 125 147
169 Dragonsinger 125 146
170 Pt England Scribes 120 120
170 Korero Pt England 120 330
170 Digital learning 120 180
170 Nine Inch Nails 120 150
170 Recess Monkey 120 136
171 Something Interesting to read 119 156
172 jo russ photo diary 117 140
172 Looking in the square 117 132
173 Kiwidollar.com 110 135
173 Millenium X 110 186
174 Creative Collision 107 115
175 UpsideBackwards 103 112
176 Prior Knowledge 102 114
177 Shelly van Soest Artist 100 119
178 Journey to a mini me 96 119
178 New Zealand Indian Fine Arts Society 96 120
179 Lost Soul 95 115
180 Springston School Library Blog 93 134
181 Busy Peas 91 104
182 Making IT Happen 90 120
182 The Catalyst 90 120
183 Carolyn’s blog 87 129
184 Whitireia Journalism School 78 84
185 round design 69 75
186 Social Policy Bonds Blog 65 72
187 The First Fifteen @ TIS 63 154
188 Football Tragic NZ 60 60
188 John Macilree’s Weblog# 60 60
188 Room 24, 2012 60 90
188 James McKerrow – Surveyor 1834-1919# 60 60
189 John Macilree’s Blog 54 63
190 Fundamental 52 125
190 Oracle of Okarito 52 91
191 Neil Stockley 51 65
192 Discovery Time 46 63
193 The Secret Life of Russ 44 49
194 New Zealand female Firefighter calendar 42 63
195 Ellie Great 41 45
196 Moments of Whimsy 40 48
197 Einstein Music Journal# 38 45
198 TimG_Oz Blog 34 37
199 Frontlawn 33 57
200 ICTPD 30 30
200 Sleeping with books 30 30
200 Kiwi Chronicles 30 30
200 But Now 30 60
200 Anticipating future impacts 30 60
200 The Official Ebenezer Teichelmann Blog# 30 30
200 global village governance 30 39
201 Nathanael Baker 28 30
201 Mad Young Thing 28 33
202 No Mum is an Island 27 35
203 SageNZ 22 28
204 Palmerston North.ifo 19 65
205 Relatively science 18 23
206 Blair for Mayor 16 18
207 ah! New Year’s Resolution 15 16
207 Green is good 15 17
208 Tangled up in purple 14 18
208 LoveColour Blog 14 19
209 Robtuckerpix’s Blog  13 13
209 SilverSpikes Photography  13 21
209 Kiwiaventuras 13 16
210 Rambling Reflections 12 12
211 ZL2UCX’s Blog 11 11
211 In this moment 11 18
212 pasture Harmonies 9 9
212 Think Beyond 9 9
212 A developing Geneticist 9 10
212 DMP Lead Free 9 10
213 Porirua EMO 8 8
213 KJT 7 13
213 Moderation Blog 7 7
213 Unknown Future 7 7
214 ObservatioNZ 6 7
214 TraLIS blog 6 7
215 Uncensored 5 6
216 Liminal Spaces 4 4
216 Roger Nome’s progressive Politics 4 5
216 Fuller’s watch# 4 7
217 Bob McKerrow – Wayfarer 2 2
217 Here I stand 2 2
217 Scott & Sarah Kennedy 2 2
218 amiria [blog] 1 1
218 Born on State Highway 1 1 1
218 Yea or Nay 1 1
218 Mars 2 Earth 1 1

August ’14 – NZ blogs sitemeter ranking Ken Perrott Sep 01

No Comments

 
Hager
Bloggers in the thick of election campaign? Image Credit: Against the Current


PLEASE NOTE: Sitemeter is playing up again making it impossible to automatically get the stats using the normal process. I have done a manual work around but it was still impossible to get the stats for a number of blogs that I list below. Maybe more bloggers will shift to StatCounter or other counter.

No stats could be found for these blogs:

Blog
Works in progress
Weakly Whirled News
Two Minutes Sport
Wysiwygpurple’s Blog
Stats Chat
Social Media and the 2014 General Election
Love your work
Today is my birthday
This Mum Rocks
Sportsfreak
Infectious thoughts
Science Behind the Curtain
Grumpollie
Louis’ Outlook
West City Darts
Woodleigh Nursery
Kyle MacDonald
A conservative perspective
Save our schools NZ

There are now over 300 blogs on the list, although I am weeding out those which are no longer active or have removed public access to sitemeters. (Let me know if I weed out yours by mistake, or get your stats wrong).

Every month I get queries from people wanting their own blog included. I encourage and am happy to respond to queries but have prepared a list of frequently asked questions (FAQs) people can check out. Have a look at NZ Blog Rankings FAQ. This is particularly helpful to those wondering how to set up sitemeters.

Please note, the system is automatic and relies on blogs having sitemeters which allow public access to the stats.

Here are the rankings of New Zealand blogs with publicly available statistics for August 2014. Ranking is by visit numbers. I have listed the blogs in the table below, together with monthly visits and page view numbers.

Meanwhile I am still keen to hear of any other blogs with publicly available sitemeter or visitor stats that I have missed. Contact me if you know of any or wish help adding publicly available stats to your bog.

You can see data for previous months at Blog Ranks

Subscribe to NZ Blog Rankings

Subscribe to NZ blog rankings by Email

Find out how to get Subscription & email updates

Rank Blog Visits/month Page Views/month
1 Whale oil beef hooked 3437487 4945964
2 Kiwiblog 597964 975844
3 The Daily Blog 416374 667411
4 The Standard 336201 717234
5 Transport Blog 125219 1258049
6 The Dim-Post 111640 149215
7 Throng New Zealand 49872 92859
8 Ultimate Student 43210 58570
9 Sciblogs 41677 53371
10 Liturgy 34566 46600
11 No Right Turn 32256 44240
12 Keeping Stock 28111 40128
13 NewZeal 26532 36882
14 No Minister 25364 33807
15 Homepaddock 24229 33753
16 Music of sound 14432 19760
17 13th Floor 13539 18798
18 The REAL Steve Gray 13371 19368
19 Imperator Fish 12367 16438
20 Offsetting Behaviour 11659 16748
21 Fields of Blood 11606 18040
22 TVHE 11365 13455
23 Liberation 11067 15955
24 Cycling in Christchurch 10666 13439
25 Social Media & the 2014 Election 9706 13495
26 Keith Johnson Wellington NZ 9577 9924
27 Tikorangi The Jury Garden 9432 13110
28 Cut your hair 9090 9208
29 Open Parachute 8670 11268
30 MandM 8337 9597
31 Dark Brightness 8155 8265
32 Bill Bennett 8102 12488
33 Right Reason 8021 12809
34 Hot Topic 7750 11428
35 Rugby Tips 7703 9268
36 Lance Wiggs 7625 8757
37 Aotearoa: A wider perspective 7403 9501
38 Talking Auckland 6863 9130
39 Lindsay Mitchell 6723 8782
40 Autism & Oughtisms 6177 6227
41 Matte Shot 5932 9602
42 Anglican down under 5829 8440
43 Reading the maps 5232 6923
44 Home education Foundation 5127 6764
45 Quote Unquote 4770 5524
46 Mousehouse 4475 7648
47 Teaching the Teacher 4218 5526
48 Scepticon 4175 4653
49 Avalon’s Guide: Emigrate to New Zealand 3866 5149
50 Kiwi Cakes 3772 5264
51 New Zealand Conservative 3523 4768
52 In the back of the net 3467 5446
53 The Woolshed Wargamer 2970 5640
54 Pdubyah – a life just as ordinary 2791 4111
55 Vomkrieg 2360 4193
56 PM of NZ 2293 2800
57 Crime Watch 2286 3443
58 Chris no-frills 2197 3117
59 Rodney’s Aviation Ramblings 2186 2973
60 My thinks 2176 2429
61 Canterbury Atheists 2154 2463
62 Waiology 2065 2495
63 Otagosh 2061 3295
64 Eye on the ICR 2021 2603
65 Open Parachute @ SciBlogs 1950 2149
66 Windy Hilltops 1833 2935
67 Episto 1584 2069
68 Man of Errors 1411 1599
69 Sustain:if:able Kiwi 1394 2143
70 Blessed Economist 1319 1620
71 Socialist Aotearoa 1256 1465
72 Put ‘em all on an island 1249 1545
73 Scotty Donaldson 1183 1401
74 james lin’s blog 1138 1160
75 Life Behind the IRon Drape 1113 1644
76 Michael Jeans 1086 1449
77 Helen Heath 1065 1312
78 Code for Life 1038 1205
79 ICT Teaching and Learning 1034 1254
80 A communist at large 1020 1432
81 ROI Marketing 1019 1432
82 Undeniably Atheist 1010 1235
83 Life is not a race to be finished first 969 1360
84 Capitalism is bad 924 1766
85 Stitchbird 920 1458
85 Brad Heap 920 1090
86 OracleNZ by Francisco Munoz Alvarez 885 1201
87 Life of Andrew 880 989
88 Tararua District Library 865 1235
89 misc.ience @ Sciblogs 855 952
90 Anne Free Spirit 840 2610
90 Tales from a Café Chick# 840 1320
91 AmeriNZ 832 1111
92 Ideologically impure 809 921
93 roarprawn 795 971
94 A Bee of a Certain Age 772 886
95 One Furious Llama 760 893
96 Media Sport and Other Rantings 728 830
97 Halfdone 661 788
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Sad news – Victor Stenger has died Ken Perrott Aug 31

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Stenger

I was sad to read that Victor Stenger died during the week at the age of 79.

Victor was a prolific author, writing on science, religion and philosophy. He often dealt with difficult issues coming out of the religion-science debates and was always able to explain complex subjects very effectively for the layperson.

In his retirement, after a career in particle physics research, Stenger took to writing popular books in science, religion and philosophy and participating in the public discussion and debate of these issues. Although not as prominent as the people usually called the “New Atheists” he was one of that group. In fact he wrote a book  titled The New Atheism: Taking a Stand for Science and Reason. (See my review of this book at Defending science and reason).

Victor was also well-known for public debates with religious apologists like William Lane Craig and Hugh Ross. I believe his role in these were important because of his ability to explain particle and cosmological physics and thereby show how these apologists had been distorting the science. Readers interested in watching some of these debates will be able to find them on YouTube.

I suppose it is fitting that Victor Stenger was writing till the end. He died with one book waiting to be published – God and the Multiverse: Humanity’s Expanding View of the Cosmos.

Victor will be missed not only by his family and people who knew him, but also by many readers.

I urge interested readers to read one or more of his popular science book. Wikipedia lists the following –  all published by Prometheus Books:

See also:
Victor Stenger, Physicist and Prolific Atheist Author, is Dead at 79
Victor Stenger has died.

The links below are to my own reviews of a few of Victor Stenger’s books:

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Making money out of fanatics Ken Perrott Aug 29

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bad science

Click on image to enlarge

This looks like a Xcd cartoon. I picked it up from a new Facebook page The Girl Against Fluoride Lies. Good to see more and more Facebook pages like this.

Speaking of fluoride – the cartoon sort of reminds me of Paul Connett’s book – The case against fluoride?

 

Dirty politics on the Royal Society fluoride review Ken Perrott Aug 27

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Anti-intellectualism has been a constant thread winding its way through our political and cultural life nurtured by the false notion that democracy means that my ignorance is just as good as your knowledge

In Anti-fluoride activists unhappy about scientific research I related how local anti-fluoride propagandists were busy rubbishing the Royal Society of NZ  fluoride review – even before it was released. Now that it is released (see Health Effects of Water Fluoridation: a Review of the Scientific Evidence) they have gone into a manic mode – launching press releases and facebook attacks. Given that some of these were launched within hours of the report’s release these propagandists hadn’t bother actually reading the report itself.

These attacks are typical of anti-science people when confronted with scientific information undermining their strong beleifs. As we say in New Zealand, these critics “play the man rather than the ball.” But first, let’s deal with  the single criticism of the scientific content of the report – the question of the mechanisms of the beneficial roles of fluoride for teeth.

The old “topical” argument

The anti-fluoride brigade has a thing about this – claiming that the mode of action of fluoride is by topical contact with the teeth – and then usually they try to claim only high concentrations, as in toothpaste, are effective topically. Anything to rule our a role for fluroidated drinking water.

The Royal Society report discusses various studies, saying they:

“suggest that the predominant effect of fluoride is mainly local (interfering with the caries process) rather than systemic (pre-eruptively changing enamel structure), though the latter effect should not be dismissed.”

It then discusses the evidence for a systemic role in the section Contribution of pre-eruptive fluoride exposure to preventive effects.

“Despite a substantial body of evidence suggesting that the predominant effect of fluoride in mitigating the caries process occurs post-eruptively and topically, some recent studies provide additional evidence of a systemic effect of fluoride on pre-erupted teeth. Singh et al.[79] found that fluoride is acquired in enamel during crown completion in the first permanent molars, during the time that the matrix is formed and calcified in the first 26-27 months of life. The same group had previously evaluated the pre- and posteruptive effects of fluoride exposure at the individual level, controlling for multiple fluoride sources and potential confounders, and showed a significant effect of pre-eruptive fluoride exposure on caries in permanent teeth.[80] However, they determined that maximum benefit was gained by having both pre- and post-eruptive fluoride exposure. Other groups have also found that a higher percentage of total lifetime exposure to fluoride was associated with lower caries burden,[81-83] indicating that fluoride is effective throughout the lifespan, including pre-eruptively.”

Being a scientific review, let’s list the citations used in the section quoted. Interested readers can check them out:

79: Singh, K.A., A.J. Spencer, and D.S. Brennan, Effects of water fluoride exposure at crown completion and maturation on caries of permanent first molars. Caries Res, 2007. 41(1): p. 34-42.
80: Singh, K.A., A.J. Spencer, and J.M. Armfield, Relative effects of pre- and posteruption water fluoride on caries experience of permanent first molars. J Public Health Dent, 2003. 63(1): p. 11-9.
81: Slade, G.D., et al., Associations between exposure to fluoridated drinking water and dental caries experience among children in two Australian states. J Public Health Dent, 1995. 55(4): p. 218-228.
82: Slade, G.D., et al., Caries experience among children in fluoridated Townsville and unfluoridated Brisbane. Aust N Z J Public Health, 1996. 20(6): p. 623-9.
83: Spencer, A.J., J.M. Armfield, and G.D. Slade, Exposure to water fluoridation and caries increment. Community Dent Health, 2008. 25(1): p. 12-22.

Hardly suprising to anyone recognising that reality is rarely as simple as they might desire. The benefits of fluoride are confered both by a systemic effect on pre-erupted teeth and by a topical or surface effects on existing teeth.

Yet Fluoride Free NZ claims (see Fluoridation review ‘Dirty Science’)

“One surprise is that the review has gone so far as to claim that fluoridation works systemically (i.e. by swallowing) before teeth erupt.

This belief was not only scientifically discredited 15 years ago by the US Public Health Service’s Centers for Disease Control, but has also been acknowledged as wrong in court in sworn affidavits by Health Ministry representatives and is contrary to what the top consultant to the MoH’s National fluoridation Information Service told the Hamilton City Council last year”

No real citations there to list – just the “authority” of ignorance. The idea that, as Isaac Asimov said, “democracy means that my ignorance is just as good as your knowledge.”

I discussed this attempt by Fluoride Free NZ to distort the evidence and literature in my articles Fluoridation – topical confusion and Topical confusion persists. It seems that Fluoride Free NZ would have been happier if the authors of this review had actually ignored the scientific literature on the topic.

Media Manipulation

I will leave aside for now the emotive language and personal attacks used by the anti-fluoride propagandists in their attacks on this review. Also, I will ignore their laughable suggestions for the “experts’ they would have liked to see on the review panel and their demand that such review should actually be a public discussion (yet they refuse to allow any open discussion on their own facebook pages!).

Let’s just consider why these people take the effort to submit press statements that few credible news sources would bother picking up. I discussed this in Anti-fluoridationist astro-turfing and media manipulation where I illustrated how planted press releases were picked up by tame “natural” health websites, Paul Connett’s Fluoride Alert website and their own Facebook and twitter social media. this self-promotion get’s requoted by anti-fluoride propagandists around the world – and sometime even makes its way into mainstream media.

Wellington Anti-fluoride dentist, Stan Litras, planted just such a press release. He provided a misleading headline Review ‘confirms fluoridation must end’ which was picked up and circulated by Connett’s Fluoride Alert. It has also been heavily circulated on Twitter and anti-fluoride Facebook pages.

I guess there are now a host of anti-fluoride activists around the world who actually believe the Fluoride Review produced by the Royal Society of New Zealand recommended the end of fluoridation!

Yet, in fact, the review concluded:

“Councils with established CWF [community water fluoridation] schemes in New Zealand can be confident that their continuation does not pose risks to public health, and promotes improved oral health in their communities, reducing health inequalities and saving on lifetime dental care costs for their citizens. Councils where CWF is not currently undertaken can confidently consider this as an appropriate public health measure, particularly those where the prevalence and severity of dental caries is high.”

How do these guys sleep straight in their bed at night?

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Review finds community water fluoridation safe and effective Ken Perrott Aug 22

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A press release from the Royal Society of NZ today. I think the “take home message is:

“The panel concluded that the concerns raised by those opposed to fluoridation are not supported by the scientific evidence”


A review of the scientific evidence for and against the efficacy and safety of fluoridation of public water supplies has found that the levels of fluoridation used in New Zealand create no health risks and provide protection against tooth decay. Councils currently implementing this measure can be confident about its public health benefits, while those not currently fluoridating water can consider it a safe and effective option.

The review, entitled Health Effects of Water Fluoridation: a Review of the Scientific Evidence, was commissioned by Sir Peter Gluckman, the New Zealand Prime Minister’s Chief Science Advisor and Sir David Skegg, President of the Royal Society of New Zealand at the request of Auckland City on behalf of several local Councils.

“The process for the review was rigorous,” said Sir David Skegg. “It included an extensive evaluation of the scientific literature by a panel of five experts, as well as one lay observer with local body experience. The resulting report was reviewed by three international experts and by the Director of the National Poisons Centre,” he said.

According to Skegg, the panel paid particularly close attention to the claims that fluoride contributes to the risks of cancer, musculoskeletal and hormonal disorders, as well as to claims that it has adverse effects on brain development – these being the major contentions about potential harms that have been made.

“The panel concluded that the concerns raised by those opposed to fluoridation are not supported by the scientific evidence,” said Skegg.

According to the report, the only side effect of fluoridation at the levels used in New Zealand is mild dental fluorosis, which can cause opaque white areas in the tooth enamel that is usually of no cosmetic significance. This is found to be as common in non-fluoridated areas as it is in fluoridated areas, which is probably a reflection of behaviour such as swallowing of fluoridated toothpaste by young children.

“The review finds compelling evidence that fluoridation of the water at the established and recommended levels produces broad and continuing benefits for the dental health of New Zealanders,” said Sir Peter Gluckman. “The public can be reassured on the basis of robust scientific data, that the implementation of this public health measure poses no risk of adverse health effects,” he said.

“It is worth noting that dental health remains a major issue for much of the New Zealand population, particularly in communities of low socioeconomic status.”

From a scientific perspective, the report finds that community water fluoridation provides a cost-effective and equitable way of improving public health.  However, it should be noted that the review does not address the broader philosophical issues that have surrounded fluoridation.

Visit Health Effects of Water Fluoridation for full report, executive summary and a list of contributors.

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Anti-fluoride activists unhappy about scientific research Ken Perrott Aug 21

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Mark Atkin (“Science and legal advisor” for FFNZ) and Mary Byrne (“National Co-ordinator and media contact” for FFNZ) promote their “magic” fluoride free water.

These activists have a really weird understanding of science and the nature of scientific research. How’s this for press releases from the NZ Fluoride Free Science and Legal Advisor, Mark Atkin:

1: Rubbishing a planned review of the published science around fluoridation by Sir Peter Gluckman (the Prime Minister’s Chief Science advisor) and the NZ Royal society. Mark declares the review is “totally one-sided” and that Gluckman admits this (see Secret Fluoridation Review Totally One-Sided Admits Chair)!

And what is Atkin’s “evidence” for that? Well Gluckman did say:

“this is just straightforward scientists reviewing what’s in the peer reviewed literature about what we know about the safety and efficacy of fluoride in water. It is reviewing the scientific literature.”

And Atkin chose to distort that to mean:

This “‘review’ of water fluoridation will only look at research that supports fluoridationists’ belief in ‘the safety and efficacy of fluoride in water’, says Sir Peter Gluckman, co-chair of this thereby-admitted ‘kangaroo review’.
It is no wonder that scientific studies showing water fluoridation is neither safe nor effective have not been sought for this bogus ‘review’.”

Mark Atkin seems to have a serious comprehension problem.

2: Claiming Waikato University is commissioning research to obtain  predetermined conclusions.

The same day Atkin produced another press release (see Predetermined ‘research’ outcome commissioned by Waikato Uni). He certainlychurns out press releases even if their quality leaves a lot to be desired.

The specific project Atkins is upset about plans to look in detail at:

“nearly 1700 publicly accessible submissions to the Hamilton City Council on the initial decision to remove flouride from Hamilton’s city water supply with a view to tracing interests and other links to private interests and public lobbying groups.”

Rather than making assumptions about the outcome, the research is aimed at establishing if there were links and their extent. The title of the project is “Public Integrity and Participatory Democracy: Hamilton
City Council’s Water Fluoridation Decision.” Surely it is in all our interests to determined how effective our participatory democracy works at the local body level.

Given that the anti-fluoridation activists often claim our democratic processes are distorted by groups like the District Health Boards I would have thought they would welcome this research. Mind you, they may prefer to leave that particular claim unchecked by objective analysis and actually be far more scared of what an objective analysis of the process reveals about their own manipulation and links to private commercial interests and lobby groups.

Isn’t that weird. A “science advisor” who interprets a scientific review “about the safety and efficacy of fluoride in water” to mean that “scientific studies showing water fluoridation is neither safe nor effective” will be excluded! And that research aimed at tracing interests and links of submitters to commercial and lobby groups will only produce a results claiming the links exist without considering any evidence.

Perhaps this is the way Mark Atkin thinks scientific investigations should happen. Perhaps this is the way the “world fluoridation experts” he idolizes, like Paul Connett and Declan Waugh, carry out their “investigations.”

But it is certainly not the way genuine scientific investigations are done.

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The Mind of the Science Denier Ken Perrott Aug 18

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Over recent months I have been following, and learning more about, the issues of fluoridation and the Ukrainian civil war. One is a scientific issue (at least in most of the debate), the other political. Yet in the social media discussions both issues are dominated by motivated reasoning, cherry-picking, confirmation bias and outright prejudice. The same thing is going on in both issues and in many cases show denial, the favouring of belief over facts and evidence.

Donald Prothero points out that this is just human nature. We are not “rational machines,” and, if we are honest, we should all be able to recognises these faults in our own approaches, no matter how sceptical and scientific we think we are.

Prothero presented an interesting talk at the recent Amazing Meeting in Las Vegas, he deals mainly with creationism, climate change denial and anti-vaccination beliefs but the lessons have much wider applicability.

He has some great cartoons in his lecture. But I also liked how he drew lessons from his analysis about how supporters of science and scepticism should deal with discussions when science denial occurs. Simple antagonistic argument and debunking is usually not effective. We need to recognise the beliefs and values underlying the denial and respond to those.

TAM2014 – Donald Prothero – The Mind of the Science Denier.

The lecture is based on part of Prothero’s recent book Reality Check: How Science Deniers Threaten Our Future.

 

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Open letter to Jane Nielson – a “fluoridation convert.” Ken Perrott Aug 13

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Hi Jane,

I read your article in the Sonoma County Gazette which was republished at Paul Connett’s Fluoride Alert website – Fluoridation convert. A scientist explains what changed her mind. You briefly described scientific studies which you claim convinced you to take a stance against community water fluoridation. Apparently you found these so convincing you are now a board member and steering committee member of several anti-fluoridation organisations.

My purpose here is to discuss the studies you refer to because I think your interpretation of them is mistaken. I offer my critique of your interpretation in the spirit of normal scientific exchange and discussion and hope you will respond in the same way.

You wrote that you were exasperated with the fluoridation debate so:

“I started researching for myself. This was familiar terrain: I had published many papers, so I know what it takes to prove a point scientifically, and the data required to get a paper published. I had performed analyses, plotted data and defended my research and interpretations in public forums.”

Good on you. I believe experience in scientific research, scientific publication and the use of scientific literature helps cultivate a critical and intelligent approach to the literature. I think this is essential if one seriously wishes to make sense of apparently contradictory evidence and overcome one’s own confirmation bias.

Is fluoridation effective? The WHO data

You say:

“I quickly found World Health Organization data that stunned me:

• Tooth decay has plummeted in developed countries worldwide, regardless of fluoridation.

• Cavity rates are the same—or even lower – in many non-fluoridated countries compared to the U.S.”

Just a minute! Did you look at the WHO data carefully? Did you take into account the well established multiple factors, beside fluoride, influencing dental health? (Things like diet, health services, dental treatments available, other social health services etc.) Did you consider the difficulty of drawing conclusions from data, especially a small amount of data, taken from different cultural, social and political situations? And, importantly, did you check out the WHO data which compared data from fluoridated and non-fluoridated areas in the same country? (Many of the other confounding factors can be eliminated by making comparisons  within a country).

The figure on the left below is the one most often used by anti-fluoride activists for obvious reasons – it confirms their bias. But it suffers from all the problems mentioned above (including the fact that the straight lines result from using just 2 data points for each country) and so does not allow a truly objective  person to conclude what you have.

Surely with your scientific experience you checked out the detail in the data – such as the WHO data for the Irish Republic which included that for both fluoridated and unflouridated areas? The plot of that data (see figure in the right) suggests your conclusion is unwarranted (the dotted line is the average of fluoridated and unfluoridated and corresponds to the data in the graph on the left.).

combined-who-ireland

My conclusion from the WHO data is that tooth decay has decreased in all these European countries over the last 30 years. Fluoride is just one factor in this but it is wrong to conclude from the WHO data that fluoride is ineffective (see Fluoride Debate).

Dental fluorosis

This concerns you because:

• The one clear correlation with water fluoridation is disfiguring “dental fluorosis” supposedly only a cosmetic problem.

But, Jane, have you looked at the available data on dental fluorosis carefully? Your conclusion is a misinterpretation which anti-fluoride propagandist love to promote because it confirms their bias – “fluoridation causes a “disfiguring” complaint – dental fluorosis.” But “disfiguring” or serious dental fluorosis is not caused by community water fluoridation. It is caused by excessively high fluoride dietary intake due to high natural levels of fluoride, industrial contamination or obsessive consumption of toothpaste. It is also very rare in the US, Europe, Australia and New Zealand.

Dental specialists identify various levels of fluorosis ranging from not present, through questionable, very mild, mild, moderate to severe – see the figures below (taken from Fluorosis Facts: A Guide for Health Professionals):

Fluorosis-pie-chart

Some idea of the appearance of dental fluorosis at these various levels in given by the photos below.

df

 I agree that often (not always) the occurrence of total dental fluorosis may be higher for people in fluoridated areas than in non-fluoridated area – but the “disfiguring” moderate and severe forms are not the result of community water fluoridation. The milder forms which may arise from community water fluoridation tend to be either unnoticeable or so mild as to be of only cosmetic significance.

So Jane, I am surprised that with your scientific experience you came to such an unwarranted conclusion. If you had truly looked at the data intelligently and critically surely you would not have drawn the extreme conclusion you did about community water fluoridation and dental fluorosis.

What about studies showing fluoridation is ineffective?

You refer to studies which show only minimal or no difference in oral health between fluoridated and non-fluoridated areas. I have also seen those studies. But you and I are scientists so know we should always look at the details and not rely on the conclusions drawn by political activists who misinterpret these studies. Hell, as scientists we shouldn’t even rely in the conclusions made by the researchers themselves – we should always look at the details.

Tooth decay for children living in fluoridated and unfluoridated areas has been compared in many studies. It is easy to find results confirming ones bias – pro-fluoridation or anti- fluoridation. So as scientists both you and I should consider all the studies – not just those confirming our particular bias. That should be obvious to us.

I have seen plenty of studies showing a positive effect of community water fluoridation on oral health – so how do I deal with those other studies showing no effect? Well, I certainly don’t ignore them but it helps to look at the details. For example, in my article Fluoridation: what about reports it is ineffective?  I discussed a 1985 paper by a New Zealand researcher, John Colquhoun, who found no differences in tooth decay between children in fluoridated and unfluoridated areas.

Colquhoun, who was also an antiifluoridation campaigner, chose to conclude that fluoridation had no effect on oral health. But here is the problem – the children in the non-fluoridated areas he studied all received regular topical dental fluoride application treatments, whereas most of the children in the fluoridated areas did not.  So the lack of effect was hardly surprising. In scientific terminology his control group was not a proper control.

What happens when fluoridation is stopped

The studies showing no increase in tooth decay when fluoridation is stopped are continually quoted by anti-fluoridation propagandists – but never the ones that do show such an increase. So your reading of the published studies cannot have been very thorough for you to conclude:

 “Tooth decay did not go up when fluoridation was stopped.”

For example, consider just one study in South-west Scotland by Attwood and Blinkhorn (1991) I discussed in article What happens when fluoridation is stopped?   The figure below displays some of their data

Decayed missing and filled teeth for 10 year olds. Stranraer fluoridated until 1983. Annan not fluoridated.

This study showed tooth decay increased after fluoridation was stopped in one town (Stranraer) even though there was a general decrease in tooth decay (no doubt resulting from things like improvements in diet, tooth brushing, dental treatments, etc.) indicated by the data from the town that had never been fluoridated (Annan).

Still, what about those studies which showed no increase in tooth decay when fluoridation was stopped? Studies in Cuba, the former East Germany and Finland are frequently quoted by anti-fluoridation activists.  I discussed these  in my article What happens when fluoridation is stopped? 

In all the studies referred to the researchers themselves drew attention to the role of other factors which helped maintain oral health. For example, the introduction of a school mouthrinsing programme, which has involved fortnightly mouthrinses with 0.2% NaF solutions” in La Salud, Cuba. Or “improvements in attitudes towards oral health behaviour and, on the other hand, to the broader availability and application of preventive measures (F-salt, F-toothpastes, fissure sealants etc.)” in the former East Germany.

The authors of the Finnish study even warned against drawing the conclusion you have from these studies:

“The main reason for the modest effect of water fluoridation in Finnish circumstances is probably the widespread use of other measures for caries prevention. The children have been exposed to such intense efforts to increase tooth resistance that the effect of water fluoridation does not show up any more. The results must not be extrapolated to countries with less intensive preventive dental care.”

The whole issue of dental health is clearly complex and many factors influence it. As a scientist used to dealing with complex issues you must surely agree the scientific literature should not be cherry-picked. It must be approached critically and intelligently.

Apply It, or Swallow It?

Finally, Jane, we come to the question of the mode of action of fluoride – does it work systemically via ingestion, or topically by a surface reaction on existing teeth? You assert:

In recent years the differentiation between swallowing fluoride and coating teeth with it has become lost in the discussion. But this differentiation is essential. The overwhelming consensus among scientists, including the Centers for Disease Control CDC and the National Research Council, is that fluoride works when it’s applied to the tooth surface, NOT when it’s swallowed.

I know this is the position anti-fluoride propagandists keep promoting but it doesnt actually accord with the evidence. Research shows ingested fluoride plays a beneficial role during tooth development before eruption (see my article Ingested fluoride is beneficial to dental health.

With existing teeth fluoride transferred from water and food during drinking and eating helps maintain a concentration in saliva and tooth biofilms necessary to inhibit tooth decay by a surface reaction. Researchers usually refer to the reaction of fluoride at the tooth surface responsible for inhibiting demineralisation and promoting remineralisation as the “predominate” – not the only – mechanism for the beneficial role of fluoride.

Jane, you should have read the CDC report you refer to more carefully. Far from denying a role for “swallowed” fluoride the  CDC report Recommendations for Using Fluoride to Prevent and Control Dental Caries in the United States actually says:

“However, drinking fluoridated water, brushing with fluoride toothpaste, or using other fluoride  dental products can raise the concentration of fluoride in saliva present in the mouth 100-to 1,000-fold. The concentration returns to previous levels within 1–2 hours but, during this time, saliva serves as an important source of fluoride for concentration in plaque and for tooth remineralization.”

Unfortunately, opponents of CWF claim this surface mechanism means that ingested fluoride plays no role and fluoride is only effective when topically applied – as with toothpaste. This is a gross simplification and distortion. Ingested fluoride is beneficial to teeth duing their development before eruption. And ingested fluoride contributes to the surface reaction protecting existing teeth.

Fluoridated toothpaste (and dental fluoride applications) also contribute to this surface reaction. But the more frequent “top-up” of saliva fluoride concentrations via drinking fluoridated water also make an important contribution.

An invitation

Jane, I don’t claim to have provided the final answer to all criticisms of community water fluoridation here. I have simply responded to your assessments and shown why I think them wrong.

I am open to hearing your responses to my critique and welcome any scientific exchange on this important issue with you.

I look forward to hearing from you.
Ken Perrott.

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