"...Because these artificially processed soy foods contain huge levels of phytates and goitrogens - substances that are well-known to depress your thyroid. This has been well-established for over 50 years. And women with an underactive thyroid often feel sluggish, depressed and gain large amounts of weight. What to do. Stick to traditional, femented soy products like miso, tempeh and especially tofu. It's the fermentation that brings out he beneficial compounds and suppresses the bad ones."
Source: Alternatives, Mountain Home Publishing, P.O. Box 2000, Ranson, WV 25438-2000; 1-800-844-1462
Iodine used to be added to baked goods, but now bromine is substituted. Besides being toxic, bromine depletes iodine, leading to greater deficiency. Is it any wonder why MOST Americans are secretly iodine deficient?
from RODALE BOOKS, junk mail for The 24-HOUR Pharmacist by Suzy Cohen
Further, unfermented soy contains isoflavones that are clearly associated with reduced thyroid function. Eating unfermented soy products is likely the single largest cause of hypothyroidism in women.
...Drinking even two glasses of soy milk daily for one month has enough of the chemical to alter a woman’s menstrual cycle, and although the FDA regulates estrogen-containing products, no warnings exist on soy or soy milk...
Soy phytoestrogens are also known to disrupt endocrine function, may cause infertility and may promote breast cancer in women.