Study: COVID shots alter women's menstrual cycles (

Coronavirus vaccines can alter a woman’s menstrual cycle, a new study asserts, though its authors claim that the effect is both small, temporary, and not outside the normal bounds of cycle variation.

The study, published in BMJ Medicine, claims that “COVID-19 vaccination” is associated with “an average increase in menstrual cycle length of less than one day,” the National Institutes of Health said in a press release. The NIH helped fund the study.

“The increase was not associated with any change in the number of days of menses,” the NIH claimed, and “for most study participants, the increase resolved in the cycle following vaccination.”

“These findings provide additional information for counseling women on what to expect after vaccination,” Diana Bianchi, the director of the NIH’s Eunice Kennedy Shriver National Institute of Child Health and Human Development, said in the release.

“Changes following vaccination appear to be small, within the normal range of variation, and temporary,” she added.



Posted by Jan of Oz

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