• Since their vaccination against Covid-19, many women are worried about various upheavals in their menstrual cycle.

  • In early July 2022, a 23-year-old woman said on social media that she had been diagnosed with early menopause after her second injection.

  • “A fortuitous association”, according to the National College of French Gynecologists and Obstetricians (CNGOF).

This is one of the consequences of the vaccine against Covid-19.

After their first or second injection, many women have reported different side effects on their periods.

They can be numerous, according to the National Agency for the Safety of Medicines and Health Products (ANSM): "abnormally long bleeding", "an absence of menstruation for several months", "significant pelvic or abdominal pain", or again “abnormal bleeding in quantity and duration”.

Rarer, a 23-year-old young woman said on Twitter on July 5 that she had been diagnosed with early menopause after her second vaccine injection in August

2021

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big delays in periods of more than 3 months”, “haemorrhagic flows”, as well as “possible fertility problems”.

Can this diagnosis be considered as a consequence of the vaccine, or is it a disorder that occurred at the time of the injection without there being an established link?

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First of all, remember that the adverse effects described by many women, as mentioned above, do exist.

The ANSM has so far identified more than 11,000 reports filed in France.

But according to the National College of French Gynecologists and Obstetricians (CNGOF), menopause is not part of the reports.

“In the vast majority, these are transient, minor and totally reversible menstrual disorders.

Two types of disorders have mainly been described: either ovulation disorders or changes in the abundance of menstruation”, specifies Doctor Geoffroy Robin, Secretary General of the CNGOF.

How then to explain the diagnosis that was provided to this young patient after her second injection last August?

“It is in this case a fortuitous association”, underlines the gynecologist.

According to him, the patient could for example be predisposed to develop premature ovarian failure, and the disease could have declared itself at the same time.

“No other cases of premature ovarian failure”

Premature ovarian failure – formerly called premature menopause – is defined on clinical and hormonal criteria in women under 40 years old.

The consequences are multiple: “risk of osteoporosis, impaired quality of life, anxiety-depressive syndromes, severe infertility, vascular risk”, quotes Doctor Geoffroy Robin.

Who assures “that no other case of premature ovarian failure has been reported in clinical studies”.

In the past, treatments completely unrelated to the current pandemic have already caused premature ovarian failure.

This is for example the case of chemotherapy, specifies Doctor Geoffroy Robin.

However, in the case of Covid-19, the side effects on menstrual cycles remain a very gray area in research.

“Issues relating to menstruation have hardly been addressed in most vaccine research and trials, so there is not a lot of reliable data,” noted researcher Gabriella Kountourides in an article published in last March on The Conversation website.

Researchers from the University of Bristol have taken an interest in this problem.

“Unfortunately, questions about menstruation have been excluded from most large-scale studies of COVID-19 (including vaccine trials), so it is currently unclear how many women experienced changes. menstrual cycle,” the researchers explain.

For its part, the National Medicines Agency admits that there is a difficulty in analyzing cases of menstrual disorders, “because they are often poorly documented”.

“In their experience, the majority of menstrual disorders observed were generally non-serious, short-lived and self-limiting,” says the organization on its site.

If no link has yet been proven between early menopause and the Covid-19 vaccine, the ANSM invites the women concerned to report their symptoms on the dedicated site.

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