Re: rate of thyroid cancer in Japan?

[Guest guest]

Hi Gail,

As

can be seen in some of my previous posts, I would wonder what this lecturer has

to sell, and how it might skew that which he/she progulmates.

As

far as Japan/thyroid cancer, certainly not an expert, but have you heard of

uranium 235?

Dennis Dvorak

From:

iodine [mailto:iodine ] On Behalf Of Gail

Sent: Sunday, October 05, 2008 8:08 AM

iodine

Subject: rate of thyroid cancer in Japan?

Was at a seminar today on minerals and the

lecturer when talking about

Iodine - while saying that there was a lot of iodine deficiency -

dismissed the use of high dose iodine, claiming that the Japanese had

the highest rate of thyroid cancer in the world.

Does anyone know if there are any figures that show this, or what this

sort of claim is based on? It is an argument that I've heard used

before to discourage Iodine use, but so far haven't found anything to

support it.

Gail.

[Guest guest]

On Sun, Oct 5, 2008 at 6:07 AM, Gail <gail_m_allen@...> wrote:

> Was at a seminar today on minerals and the lecturer when talking about

> Iodine - while saying that there was a lot of iodine deficiency -

> dismissed the use of high dose iodine, claiming that the Japanese had

> the highest rate of thyroid cancer in the world.

>

> Does anyone know if there are any figures that show this, or what this

> sort of claim is based on? It is an argument that I've heard used

> before to discourage Iodine use, but so far haven't found anything to

> support it.

>

> Gail.

There is at least one study that would seem to discount that claim:

================

http://cebp.aacrjournals.org/cgi/content/abstract/10/9/979

Contrary to our hypothesis, increased dietary iodine, most likely

related to the use of multivitamin pills, was associated with a

reduced risk of papillary thyroid cancer.

================

From a brief glance at the issues, thyroid cancer

is thought to be genetic or from exposure to radiation,

and in either case Japan could be higher than average.

Also see:

http://health.usnews.com/articles/health/healthday/2008/08/29/some-hiroshima-sur\

vivors-at-thyroid-cancer-risk.html

Some Hiroshima Survivors at Thyroid Cancer Risk

Radiation may have caused chromosomal change that raises odds for

malignancy, study finds

[Guest guest]

These are old numbers but the rate of 11,000 in 10 years time is not large at all. In the US the rates are 20,000 per year. I think that increasing rates (if they are occuring) are due to Hiroshima not iodine. ( http://www.groundreport.com/Health_and_Science/Curse-of-atomic-bomb-results-in-thyroid-cancer_1 )

====================================================

http://www3.interscience.wiley.com/journal/112768948/abstract?CRETRY=1 & SRETRY=0

Article

Incidence of thyroid cancer in Japan

Akihiko Koike, MD *, Takayoshi Naruse, MD

First Department of Surgery, Aichi Medical University, Nagakute-cho, Aichi-gun, Aichi-ken, 480-11, Japan

*Correspondence to Akihiko Koike, Aichi Medical University, Nagakute-cho, Aichi-gun, Aichi-ken, 480-11, Japan

Keywords

papillary • follicular • medullary and anaplastic carcinomas • age adjusted rates • male: female ratio • age specific rates

Abstract

The incidence of thyroid cancer was analyzed based on data provided by cancer registration in Japan and also based on data for 11, 104 cases of thyroid cancer registered at the Japanese Committee for Registration of Malignant Neoplasm of Thyroid (JCR-MNT) from 1977 through 1986

Incidence rates for men and women gradually increased over the study period from 1959 through 1985. The age-adjusted rates for 1985 showed 1.1 per 100,000 for men and 3.1 per 100,000 for women. The higher rates were observed in Hiroshima and Nagasaki cities. Male to female ratio was 1:6 in papillary and follicular carcinomas and 1:2 in medullary and anaplastic carcinomas. Papillary, follicular, and medullary carcinomas are more common in the fifth and sixth decades of life while anaplastic carcinoma is more common in the elderly. The age-specific rates by histological classification showed no change over the study period of 1977 through 1986. The increased incidence could be attributed to improvements in diagnostic procedures

rate of thyroid cancer in Japan?

> Was at a seminar today on minerals and the lecturer when talking about> Iodine - while saying that there was a lot of iodine deficiency -> dismissed the use of high dose iodine, claiming that the Japanese had> the highest rate of thyroid cancer in the world. > > Does anyone know if there are any figures that show this, or what this> sort of claim is based on? It is an argument that I've heard used> before to discourage Iodine use, but so far haven't found anything to> support it.> > Gail.> > > ------------------------------------> > > > >