Excessive Iodine Intake 
parrotgreen
17 y
2,140
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Anyone has an idea of what constitutes excessive Iodine intake?
I found this at
http://jcem.endojournals.org/cgi/content/abstract/78/2/393
Maybe this has already been discussed on this forum and I missed it?
Association between dietary Iodine intake and prevalence of subclinical hypothyroidism in the coastal regions of Japan
N Konno, H Makita, K Yuri, N Iizuka and K Kawasaki
Department of Internal Medicine, Hokkaido Central Hospital for Social Health Insurance, Sapporo, Japan.
The prevalence of thyroid dysfunction in relation to Iodine intake was studied in adults (n = 1061) in five coastal areas of Japan that produce iodine-rich seaweed (kelp). The prevalence of hyperthyroidism (TSH < 0.15 mU/L) was similar in these areas, whereas that of hypothyroidism (TSH > 5.0 mU/L) varied from 0-9.7%. The relative frequency of above normal Iodide concentration in the morning urine (> or = 75 mumol/L) [high urinary Iodide (UI)] varied from 3.7%-30.3%. Together with previously reported results of a noncoastal city, the frequency of high UI correlated significantly with that of hypothyroidism with negative thyroid autoantibody (r = 0.829, n = 6, P < 0.05) but not with positive thyroid autoantibody (r = 0.278, NS) or with that of hyperthyroidism (r = 0.038, NS). Hypothyroidism was more prevalent in thyroid autoantibody-negative subjects with high UI (group II, 12.1%) than with normal UI (group I, 2.3%) (P < 0.001). The TSH [21.9(6.5-73.7)mU/L] (mean +/- SD) and thyroglobulin [288 (182-456) micrograms/L] levels in group II were significantly higher than the respective levels in group I [9.6(3.7-25.3)mU/L and 123 (38-399) micrograms/L] (P < 0.05). Free T4 of group II (9.9 +/- 3.9 pmol/L) was significantly lower than in group I (14.2 +/- 3.9 pmol/L) (P < 0.05). These results indicate that
1) the prevalence of hypothyroidism in iodine sufficient areas may be associated with the amount of iodine ingested;
2) hypothyroidism is more prevalent and marked in subjects consuming further excessive amounts of iodine; and
3) excessive intake of iodine should be considered an etiology of hypothyroidism in addition to chronic thyroiditis in these areas.
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- Re: Excessive Iodine Intake 23rd Psalm
17 y
2,074
This is a reply to # 858,174(Excerpt from
http://thyroid.about.com/od/newscontroversies/a/toomuchiodine.htm)
Too Much vs. Not Enough, and What It Does To Your Thyroid?
The New England Journal of Medicine published new research from China that looks at the relationship between Iodine intake and thyroid disease. Reporting in the June 29, 2006 issue, the researchers concluded that "more than adequate or excessive Iodine intake may lead to hypothyroidism and autoimmune thyroiditis."
Iodine Excess
On the other side of the controversy is the recognition that excessive Iodine can trigger autoimmune thyroid disease and hypothyroidism.
According to animal studies, high iodine intake can initiate and worsen infiltration of the thyroid by lymphocytes. Lymphocytes are white blood cells that accumulate due to chronic injury or irritation. In addition, large amounts of iodine block the thyroid's ability to make hormone.
In this New England Journal study, researchers, led by Dr. Weiping Teng, of China Medical University in Shenyang, looked at the thyroid effects of giving supplemental to three separate groups: people who were mildly iodine-deficient, those with adequate iodine intake, and those with excessive iodine intake. They found that giving iodine to people who had adequate or excessive iodine intake could lead to hypothyroidism autoimmune thyroiditis.
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- Re: Excessive Kelp Intake Newport
17 y
2,066
MoreThis is a reply to # 858,174Really this study is flawed; it does not take into account the vast amount of toxins present in the seaweed at all. To achieve the type of Iodine sufficiency required the amounts of toxins via kelp must have been mind boggling…
I see no comparison of Bromine, Arsenic and other heavy metals contained in this kelp in relation to iodine.
This is exactly why elemental Iodine in the form of Lugol's or Cayce's detoxified Iodine should be used.
See
http://www.newmediaexplorer.org/chris/2007/01/31/consequences_of_iodine_defic...
for the words Elemental (not from Kelp).
and:
Many marine plants, particularly kelp, are a rich source of bromine and iodine, and depending on their. Bromine / Iodine ratio and whether someone is ...
http://www.acu-cell.com/br.html
- Thanks n/m parrotgreen 17 y 1,726
- Re: Excessive Iodine Intake 23rd Psalm
17 y
2,074
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