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Does zinc boost fertility?

nih.gov - Zinc, folic acid supplement does not improve male fertility, NIH study ...

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Zinc, folic acid supplement does not improve male fertility, NIH study suggests

Dietary supplements containing zinc and folic acid — marketed as a treatment for male infertility — do not appear to improve pregnancy rates, sperm counts or sperm function, according to a study conducted by the Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD), part of the National Institutes of Health. The study appears in the Journal of the American Medical Association. The authors note that most so-called fertility supplements contain zinc and folic acid. Zinc is an essential mineral for sperm formation, and folate, the natural form of folic acid, depends on zinc to help form DNA in the sperm. Previous studies of these nutrients as a treatment for male infertility have produced conflicting results. In the current trial, researchers enrolled 2,370 couples planning infertility treatments in four U.S. cities and their surrounding areas. The men were assigned at random to receive either a placebo or a daily supplement containing 5 milligrams of folic acid and 30 milligrams of zinc. Live births did not differ significantly among the two groups: 404 (34%) in the supplement group and 416 (35%) in the placebo group. Similarly, the groups did not differ among various measures for sperm health, such as sperm movement, shape and total count. However, the proportion of sperm DNA fragmentation—broken DNA in the sperm—was higher in the supplement group (29.7%), compared to the placebo group (27.2%). Studies have linked a high rate of sperm DNA fragmentation to infertility. Men in the supplement group also had a higher proportion of gastrointestinal symptoms, compared to the placebo group: abdominal discomfort (6% vs. 3%), nausea (4% vs. 2%) and vomiting (3% vs. 1%). “Our study is one of the first randomized, placebo-controlled trials to assess whether folic acid and zinc supplements help to improve male fertility,” said Enrique Schisterman, Ph.D., of the NICHD Division of Intramural Population Health Research, who conducted the trial, along with colleagues. “Our results suggest that these dietary supplements have little to no effect on fertility and may even cause mild gastrointestinal symptoms.” About the Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD): NICHD leads research and training to understand human development, improve reproductive health, enhance the lives of children and adolescents, and optimize abilities for all. For more information, visit https://www.nichd.nih.gov. About the National Institutes of Health (NIH): NIH, the nation's medical research agency, includes 27 Institutes and Centers and is a component of the U.S. Department of Health and Human Services. NIH is the primary federal agency conducting and supporting basic, clinical, and translational medical research, and is investigating the causes, treatments, and cures for both common and rare diseases. For more information about NIH and its programs, visit www.nih.gov.

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Should I take zinc pills everyday?

A: Most people source enough zinc through diet alone, but if you're not getting enough or you're at risk of a zinc deficiency, you can add a multivitamin containing zinc or a zinc supplement every day (or as recommended by your doctor).

everydayhealth.com - Zinc 101: Uses, Dosage, Foods, Supplements, Risks, and More

Zinc is considered a trace mineral, which means your body needs only a small amount of it to work properly. (1) Still, it’s important because of the role it plays in keeping you healthy. Zinc heals wounds and keeps your immune system humming and ready to take on threatening bacteria and viruses. (2) An over-the-counter zinc supplement may help reduce the duration and the severity of the common cold — as long as you take it within 24 hours of the first sign of sickness. (3) Zinc also helps the body make protein and DNA. (2,4) “Zinc is crucial during pregnancy, infancy, and childhood because it supports proper growth and development during each of these life stages,” says Angie Kuhn, RDN, the Seattle-based director of research and development for Persona. Some studies suggest zinc may help slow the progression of macular degeneration when combined with other vitamins and antioxidants, though more research is needed. (5)

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