Psychological stress is harmful to sperm and semen quality, affecting its concentration, appearance, and ability to fertilize an egg, according to a study led by researchers Columbia University’s Mailman School of Public Health and Rutgers School of Public Health. Results are published online in the journal Fertility and Sterility. According to the American Society for Reproductive Medicine, infertility affects men and women equally, and semen quality is a key indicator of male fertility.
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