Posted by Beyond Health on Nov 3rd 2025
Hypothyroidism; Deficiency and Toxicity
By Raymond Francis Like any other so-called disease, hypothyroidism has two fundamental causes: deficiency and toxicity. Although all of the fundamental nutrients are needed for optimal thyroid health, there are particular nutrients that are central to thyroid function. For example, thyroid hormone is made up of a tyrosine compound to which atoms of iodine are added. Iodine deficiency is common. Tyrosine is made from the amino acid phenylalanine. The best sources of phenylalanine are dairy, meat and eggs, so it’s very possible that vegans can become deficient in phenylalanine, especially if their gastrointestinal absorption is poor. However phenylalanine is also found in almonds, avocados, bananas, brown rice, oats, mustard greens, seaweed, fish, lima beans, peanuts, pumpkin seeds and sesame seeds. Phenylalanine and tyrosine can also be taken as supplements. Selenium is needed to activate the thyroid hormone, and many people don’t get enough of this antioxidant mineral. Aga…
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