COVID vaccine may have short-term impact on periods, study finds

Adriana Lima
By Adriana Lima 3 Min Read
origin 1COVID vaccine might have short-term impact on menstruation, study finds ©Canva

Could COVID-19 mRNA vaccines change girls’s menstrual cycles?

A brand new French study has discovered proof that this may be taking place, whereas some consultants warn that different components may even be at play.

The analysis “provides new arguments for the existence of an increased risk of heavy menstrual bleeding following vaccination against COVID-19 using an mRNA vaccine,” according to a statement from Epi-Phare, a company that carries out nationwide well being research for the French authorities.

Researchers documented the vaccination standing of roughly 4,600 girls hospitalized as a consequence of vital menstrual bleeding in 2021 and 2022.

They in contrast their situation with a management group of ladies who had not been handled for this drawback.

Their findings counsel that the danger of getting heavy menstrual bleeding is barely greater after a lady receives her first Moderna or Pfizer vaccine, each administered in two consecutive doses.

This elevated danger continued one to a few months after vaccination. No danger of heavy menstrual bleeding was noticed after a subsequent booster dose.

“It’s important to listen to what women have to say,” Dr Odile Bagot, a gynecologist who was not concerned within the study, informed RockedBuzz through Euronews Next.

“If there is a causal relationship, it is ultimately neither very frequent nor very significant, and it is certainly not persistent beyond three months,” he added, relating to the study’s findings.

No scientific consensus

After the primary stories of modifications in girls’s menstrual cycles after vaccination, a number of research have been carried out to find out whether or not that is the case.

A study published in January 2024who analyzed information from customers of a cycle monitoring app, concluded that vaccination was “related to a small change in cycle size” that “resolves quickly by the subsequent cycle.”

Another study drew related conclusions. Conducted on the Swedish inhabitants and revealed in May 2023 in the British Medical Journal (BMJ)acknowledged that “the findings do not provide substantial support for a causal association between SARS-CoV-2 vaccination” and menstrual issues reported to healthcare employees.

“When you have contradictory studies. This does not mean that one lies and the other does not, it means that the phenomenon is far from certain and not very strong,” Bagot stated.

Other components may additionally have performed a task within the menstrual modifications.

“Both the stress of vaccination and the inflammatory and immune phenomena that necessarily follow vaccination can influence the cycle,” added Bagot.

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