How to Restore Your Beautiful Hair and Skin by Barbara Minton See all TBYIL articles by Barbara Minton Will your hair turn gray or fall out? The answer is dependent on your body having proper levels of natural thyroid hormones. Ground breaking research has documented that human hair follicles are direct targets of thyroid hormones. The study assessed the impact of the two central thyroid hormones of the body, T3 and T4 on the human hair follicle. Human hair follicles in their growth phase were obtained from women between the ages of 40 and 69 with adequate thyroid levels. The follicles were cultured and treated with T3 and T4. Read More.
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