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Date: | Wed, 16 Nov 2011 22:25:24 -0500 |
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http://www.ncbi.nlm.nih.gov/sites/entrez?cmd=Retrieve&db=pubmed&dopt=AbstractPlus&list_uids=15142639
Med Hypotheses. 2004;62(6):871-5.
Nutrition, evolution and thyroid hormone levels - a link to iodine
deficiency disorders?
Kopp W.
Source
Diagnostikzentrum Graz, Mariatrosterstrasse 41, 8043 Graz, Austria.
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Abstract
An increased iodine requirement as a result of significant changes in
human nutrition rather than a decreased environmental iodine supply is
suggested to represent the main cause of the iodine deficiency disorders
(IDD). The pathomechanism proposed is based on the fact that serum
concentrations of thyroid hormones, especially of trijodothyronine (T3),
are dependent on the amount of dietary carbohydrate. High-carbohydrate
diets are associated with significantly higher serum T3 concentrations,
compared with very low-carbohydrate diets. While our Paleolithic
ancestors subsisted on a very low carbohydrate/high protein diet, the
agricultural revolution about 10,000 years ago brought about a
significant increase in dietary carbohydrate. These nutritional changes
have increased T3 levels significantly. Higher T3 levels are associated
with an enhanced T3 production and an increased iodine requirement. The
higher iodine requirement exceeds the availability of iodine from
environmental sources in many regions of the world, resulting in the
development of IDD.
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So if we eat a true paleo diet we would not need to supplement, except
that iodine chelates or somehow removes toxins in our environment, such
as the other halogens and mercury.
William
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