Penn State Hershey Medical Center home Penn State Hershey Medical Center home Penn State Hershey: Patient Care home Penn State Hershey: Education home Penn State Hershey: Research home Penn State Hershey: Community home
Penn State Hershey Health Information Library
  Library Home
  Find A Physician
  Find A Practice
  Request An Appointment
  Search Clinical Studies
  Classes and Support Groups
  Ask A Health Librarian
  Subscribe to eNewsletters


Penn State Hershey Health Information Centers
  Bone and Joint
  Cancer
  Children
  Heart
  Men
  Neurology
  Pregnancy
  Seniors
  Women

        Follow Us

Male Fertility Supplements Fail to Deliver

TUESDAY, Jan. 7, 2020 (HealthDay News) -- Supplements containing zinc and folic acid don't appear to boost male fertility, a new study finds.

Despite marketing claims, these supplements don't improve pregnancy rates, sperm counts or sperm function, researchers say.

"Our results suggest that these dietary supplements have little to no effect on fertility and may even cause mild gastrointestinal symptoms," researcher Enrique Schisterman said in a news release from the Eunice Kennedy Shriver National Institute of Child Health and Human Development, part of the U.S. National Institutes of Health. He is with the institute's division of intramural population health research.

The researchers recruited more than 2,300 U.S. couples planning to get fertility treatment. They randomly assigned the men to take a pill containing zinc and folic acid or a placebo.

Births didn't differ between men who got the supplement and men who didn't. Among men who took the supplement, there were 404 births, compared with 416 among men who took the placebo, the researchers reported.

Sperm health was also similar between the groups. But the proportion of broken DNA in the sperm was higher in the supplement group (30%) than in the placebo group (27%). Studies have linked a high rate of broken sperm DNA with infertility, the researchers noted.

Men who took the supplement also reported more abdominal discomfort, nausea and vomiting than men who took the placebo.

The report was published Jan. 7 in the Journal of the American Medical Association.

More information

For more on male fertility, head to the American Urological Association.



-- Steven Reinberg



SOURCE: Eunice Kennedy Shriver National Institute of Child Health and Human Development, news release, Jan. 7, 2020

Copyright © 2020 HealthDay. All rights reserved.