Does Corona vaccination affect the female cycle?

Study results are available

Created: 01/28/2022, 11:41 am

A corona vaccination can affect the female cycle.

© Moritz Frankenberg/dpa

Since the first corona vaccinations, many newly vaccinated women have reported changes in their cycle.

A study sheds light on the connections.

A corona vaccination* can have an effect on the female cycle, but the fluctuations are small and temporary.

This is the conclusion of an overview article in the specialist journal

.

The reproductive medicine specialist Victoria Male from Imperial College London has looked at

, among others .

In the US study, thousands of women's periods were monitored for six cycles using a period app.

2,400 of the almost 4,000 subjects were vaccinated, the rest were unvaccinated.

The first dose had no effect on menstrual bleeding.

After the second dose, the period came half a day later on average.

Heavier bleeding after corona vaccination

The delay was greatest in the 358 women who received both vaccinations within the same cycle - impossible according to the German vaccination scheme.

They started bleeding more than two days later.

.

In all women, this normalized after two cycles.

In the other study, 5,688 Norwegian women were asked whether they noticed any changes before or after vaccination.

38 percent reported

, 39 percent after the first dose, 41 percent after the second shot.

The most common change reported was heavier bleeding.

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"The results of both studies provide certainty," summarizes Male: "

." That this is an issue at all is due to Male, according to Male on the refuted false information that corona vaccinations are supposed to make you infertile.