How Poor Sleep Affects Your Hormones Poor sleep habits, insomnia, and sleep deprivation have been shown to cause changes in key hormones that affect the menstrual cycle. Elevations of follicle-stimulating hormone (FSH) have been found in night workers and those who sleep during the day and are up at night. High levels of FSH are a sign of poor ovarian reserve and possibly advanced ovarian aging. Luteinizing hormone (LH) levels are higher in people who skimp on their sleep, which is associated with infertility. A poor or skipped night of sleep can cause a rise in thyroid-stimulating hormone
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