I’ve heard that soy can suppress the thyroid. Is there an upper limit?
Eric Needs / Originally posted on Soy Hormones & Male Infertility
Excellent question! Soy does indeed have so-called “goitrogenic” compounds (as do broccoli-family vegetables and flax seeds), which can interfere with thyroid function in people with marginal iodine intake. The answer is not to avoid these super healthy foods but to just make sure you get enough iodine. See my videos Avoiding Iodine Deficiency and Pregnant Vegans at Risk for Iodine Deficiency.
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