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Can the Corona vaccine affect the female cycle?

More and more women report on the Internet about heavier periods and a generally altered cycle after the Corona vaccination. What is behind this? Tikbow asked Mandy Mangler, M.D., chief physician for gynecology.

It is known that the Corona vaccine can cause side effects such as headaches and fever. However, changes in the menstrual cycle have not been among the known side effects. In the social media, however, there are increasing reports of women who observe irregularities after their vaccination. "Interestingly, it has been found that Corona-infected women often have heavier bleeding and longer cycles," explains Mandy Mangler, M.D., chief physician for gynecology and obstetrics at the Vivantes Auguste-Viktoria-Klinikum in Berlin. After a Corona vaccination, however, it seems to be the other way around: Individual women describe that they had heavier bleeding afterwards and, above all, a shorter cycle. In other words, they got their periods again after just three weeks, and at the same time their bleeding was heavier than usual."

Stress can be a factor

As yet, there is no scientific evaluation of these observations. American Kate Clancy, a professor at the University of Illinois, started a poll on Twitter calling on women to describe their experiences after receiving the Corona vaccine. Those who notice a change in their menstrual cycle can also report it to the Paul Ehrlich Institute to help better identify possible side effects.

So far, we can only speculate about why some women observe a changed cycle after the Corona vaccination. "Stress may be a factor" says Mandy Mangler, MD. "When you are vaccinated against a disease that the whole world is talking about, it can be threatening and trigger a stress reaction in the body." But the gynecologist doesn’t think that will be the only explanation. It is also possible that the vaccination causes thrombocytopenia, a reduction in the number of blood platelets in the blood. Blood platelets are there to stop bleeding earlier and there is generally less bleeding,” explains Mandy Mangler, MD. "If you have fewer blood platelets in your blood, it can be the other way around that you bleed more heavily or the bleeding starts earlier"

The pandemic has changed our way of life

 "The current situation alone can upset the cycle", says Mandy Mangler, MD. "Many women have become more stressed since the outbreak of the pandemic, exercise less and eat more. This poses risks. I am concerned to see that women are increasingly developing sugar and diabetes during pregnancy," although it is conceivable that the Corona vaccination could alter the menstrual cycle, this is very unlikely to be permanent, but only a temporary phenomenon," the gynecologist gives the all-clear.