Thyroid dysfunction has been known to impact female reproduction, resulting in abnormalities ranging from alteration of the menstrual cycle to infertility. The exact mechanisms of action of thyroid hormones on ovarian physiology are not well understood, but the recent discovery of thyroid hormone receptors on granulosa cells, luteal cells, and oocytes suggest that thyroid hormone […]

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What is Vitamin D? Vitamin D is not really a vitamin; rather, it is a steroid hormone. The most biologically active form is called 1,25-dihydroxyvitamin D3 (calcitriol). Active calcitriol is derived from 7- dehyrdrocholesterol, produced in the skin. 7-dehyrdrocholesterol is converted into vitamin D3 (cholecalciferol) following UV irradiation (1). The metabolic conversion in the body […]

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