What are the causes of hypothyroidism? Hashimoto’s disease, in which the autoimmune process attacks the thyroid, is believed to be the primary culprit for low thyroid function.

A number of factors – adrenal exhaustion from stress, celiac disease and gluten intolerance, environmental exposure to perchlorate and other toxins, fluoridation, and radiation – have all been implicated.

Hypothyroidism: Diet Because weight is often an issue for people with hypothyroidism, it is wise to avoid processed and refined foods, which tend to be high in calories, unwanted fats, and sugar.

What to avoid on the diet for hypothyroidism Some nutritionists suggest going easy on cabbage family (cruciferous) vegetables, especially if they are uncooked, as they may further suppress thyroid function. Avoid chlorine and fluoride in drinking water – they can block iodine receptors in the thyroid. Instead drink filtered, steam-distilled water. [source: Taste for Life]