The way your thyroid gland functions has an effect on nearly every part of your body.
This includes your hair. While some uncertainty did exist in the past about whether thyroid function influenced hair follicle health, definitive evidence was found in a major study in 2008. The results were published in the Journal of Clinical Endocrinology and Metabolism in that year. The findings in the study point to a deep relationship between hair biology and the ability of the body to retain healthy levels of the thyroid hormones T3 and T4.read more..