Since the start of vaccination campaigns against COVID-19 about two and a half years ago, many women have reported irregularities during their periods.
It turned out that there is great difficulty in finding a link between anti-coronavirus vaccines and the occurrence of major disorders during the menstrual cycle, according to what was reported Thursday by one of the largest studies that have so far dealt with a topic that has raised several questions since the start of the vaccination campaigns.
The authors of the study, published in the British Medical Journal, concluded that there was “no strong basis for a causal link between vaccines against the Covid virus and consulting a doctor due to a disorder or bleeding during the menstrual cycle.”
The study was based on the health data of about three million Swedish women, or 40% of the female population in Sweden, which made the scope of this research work wide.
Since the start of vaccination campaigns against Covid-19 about two and a half years ago, many women have reported disturbances during their periods.
There is a causal link
Based on what these women reported, the European Medicines Agency concluded that heavy menstrual bleeding was a possible side effect after receiving the mRNA vaccines, ie Pfizer-BioNTech and Moderna.
However, these disorders are reported by women individually, knowing that the disorders that occur during the menstrual cycle are caused by several factors, while the period of the cycle differs from one woman to another.
The new research work is one of the first large-scale studies to attempt to determine a possible causal link between insemination and menstrual disorders.
In menstruating women, there was no clear link between receiving the Pfizer-BioNTech vaccines, Moderna and AstraZeneca, and consulting a health professional about their menstrual cycle disorders.
These results are based on whether women needed similar consultations, and therefore do not include menstrual disorders that did not require the woman to contact a specialist.
Speaking to Agence France-Presse, Ricard Lejung, one of the study’s lead authors, said it shows that any disturbances that may occur during the menstrual cycle do not appear to be of a serious nature that warrants a doctor’s consultation.
As for women after menopause, the study proved that there is a simple link between vaccination and consulting a doctor about bleeding that women have experienced.
The researchers stressed that this link is “weak and non-uniform” and is not consistent with the hypothesis of a causal relationship between vaccination and consulting a doctor about disorders.
