Unlock the Thyroid Code: What You’re Really Eating Isn’t Helping Your Hypo or Hyperthyroidism—Here’s the Fix
It turns out that the “exclusion of all animal foods was associated with half the prevalence of hyperthyroidism compared with omnivorous diets. Lacto-ovo [dairy-and-egg] and pesco [fish] vegetarian diets were associated with intermediate protection.” But, for those eating strictly plant-based, there is a 52 percent lower odds of hyperthyroidism.
As I discuss in my video The Best Diet for Hypothyroidism and Hyperthyroidism, this apparent protection “may be due to the exclusion of animal foods, the [beneficial] effects of plant foods, or both. Animal foods like meat, eggs, and dairy products may contain high oestrogen concentrations, which have been linked to autoimmunity in cell and animal studies.” Or it could be because the decrease in animal protein by excluding animal foods may downregulate IGF-1, which is not just a cancer-promoting growth hormone, but may play a role in autoimmune diseases. The protection could also come from the goodness in plants that may “protect cells against autoimmune processes,” like the polyphenol phytochemicals, such as flavonoids found in plant foods. Maybe it’s because environmental toxins build up in the food chain. For example, fish contaminated with industrial pollutants, like PCBs, are associated with an increased frequency of thyroid disorders.
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