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Fields
Iodine-deficient vegetarians: a hypothetical perchlorate-susceptible population?Fields C, Dourson M, Borak J. Regul Toxicol Pharmacol. 2005 Jun;42(1):37-46. Review. [abstract only]
"Recent risk
assessments of environmental perchlorate have been subject to
much debate. A particular concern is whether appropriate
susceptible sub-populations have been identified.
Iodine-deficient pregnant women, especially vegetarians, have
been proposed as such a potential susceptible sub-population, but
there is no evidence of iodine deficiency in the US population
and the adequacy of iodine nutrition has not been studied in US
vegetarians. To understand the possibility that US vegetarians
might be iodine deficient, we reviewed the prevalence,
demography, and lifestyle characteristics of US vegetarians as
well as the world literature on iodine nutrition in vegetarians.
Our findings indicate that strict vegetarians and vegans, who
comprise probably less than 0.1% of the US population, have
higher education, higher incomes, and healthier lifestyles than
the general population. Field studies indicate that vegetarian
diets need not lead to iodine deficiency and vegans may suffer
excess iodine intake. It is remains uncertain whether there are
iodine-deficient vegans or pregnant women in the US. Of more
general concern is whether the 10-fold default uncertainty factor
is needed for intraspecies (i.e., within human) variability to
protect such hypothetical susceptible sub-populations."
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