COVID-19 vaccine may cause temporary, minor disruptions in menstrual cycle

(Eileen Bailey/ Healthline) –– The COVID-19 vaccine could lead to mild, temporary changes in the length of your menstrual cycle, according to a study published today in the journal Science Advances.

Nonetheless, experts say vaccines remain one of the best ways to avoid serious illness from the novel coronavirus.

The study’s researchers, led by Kate Clancy, Ph.D., an anthropologist and professor at the University of Illinois Urbana-Champaign, looked at responses by 35,000 premenopausal and postmenopausal individuals about their menstrual cycle in the weeks after receiving a COVID-19 vaccine.

None of the participants had been diagnosed with COVID-19. Researchers excluded those between 45 and 55 to avoid confusion with irregular periods due to premenopause or postmenopause. (…)