Covid: new potential side effect of vaccination, it would cause more abundant menstruation according to an American study

42% of women surveyed said they had heavier than normal menstrual flow in the first two weeks after vaccination.

This could be a new side effect of the Covid vaccination. According to an American study published in the scientific journal Science Advancesthe fact of getting vaccinated against Covid-19 makes menstrual bleeding heavier in 42% of women.

This study was carried out on 35,000 women by the following researchers: Katharine Lee of Tulane University and Kathryn Clancy of the University of Illinois Urbana-Champaign. It was mainly women under 45 who were analyzed, but also some postmenopausal women and women undergoing hormonal treatment to change sex.

?La vacuna de la covid increased the menstrual bleeding in el 42% de mujeres

Tras un estudio en el que participaron 35.000 mujeres, también se observó que estas alteraciones fueron temporales y también en muchos casos asociadas a determinados factors.https://t.co/BbZis7EYqM

— La Vanguardia (@LaVanguardia) July 16, 2022

66% of postmenopausal women reported bleeding after vaccination

They observed heavier bleeding in 42% of women who had their period within two weeks of vaccination. However, 43.6% of study participants said they had not noticed any changes in their periods after being injected with the vaccine.

More surprisingly, 66% of postmenopausal women reported bleeding after vaccination.

In January, another study from the US National Institutes of Health (NIH) reported slight delays in the monthly cycle many women after the Covid vaccination.

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