Research to Examine Whether Vaccines Affect Menstrual Cycles


Earlier this year, as Covid-19 vaccines became more widely available, some women and girls took to social media to describe changes in their menstrual cycles after receiving the vaccines, including irregular cycles, painful periods, and heavy bleeding.

Some postmenopausal women have shared stories of having their first period in years. Many wondered if vaccines were the cause.

Now researchers at five institutions, Supported by funding from the National Institutes of Healthwill conduct year-round studies to help and examine possible links between vaccination and irregular menstrual bleeding. relieve worries This can prevent women from shooting.

Evidence for abnormal periods is purely anecdotal so far. there no known link Public health experts reiterate that vaccines are safe, effective and necessary to end the pandemic.

But the stories are persistent data gap On reproductive health and women’s menstrual cycles not collected during clinical trials, including trials of Covid vaccines. Also, no scientific studies have been published examining the potential relationship between the two.

Yale School of Medicine Head of the Department of Obstetrics, Gynecology and Reproductive Sciences, Dr. “This is an important, overlooked issue,” Hugh Taylor said, adding that he also heard from his own patients about the differences in menstrual periods after receiving treatment. vaccine.

“Many people have irregular periods for a variety of reasons, so is it really different for people who have been vaccinated, or are they just associating it with the vaccine when they’re vaccinated?”

The research will be conducted by teams at Boston University, Harvard Medical School, Johns Hopkins University, Michigan State University, and Oregon Health and Science University. Studies will involve participants of all ages and backgrounds who have not yet been vaccinated, including those who plan to get vaccinated and those who have not, to examine their menstrual cycles before and after.

Doctors say menstrual health can be a reflection of women’s overall health. But they caution that a number of different factors can temporarily affect a woman’s period, including stress, illness, or lifestyle changes. Periods, including the length and flow of the menstrual cycle, also vary greatly from person to person.



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