The coronavirus vaccine does not cause worrying changes in menstruation, according to a new study gathering data from more than 12,000 women.
- 82% of women did not report a change in their periods, according to a study.
- Patients who smoke, who have already had Covid-19 or who do not use contraceptives containing estradiol are more likely to have a disturbed period.
- The authors believe that “period disturbances may be frequent but not severe”.
60.4% of the population received a complete primary vaccination and a booster dose, according to Public Health France. Among women who have been vaccinated, some have reported changes in their periods, including very large flows or delays. But, according to a new study published in the journal iSciencevaccination against Covid-19 would not cause worrying menstrual changes.
Periods: no disruption for 82% of participants
During their work, the researchers analyzed the results of a survey carried out in the United Kingdom in 2021, bringing together more than 12,000 menstruating participants, of all ages, with or without children, from all geographical areas, vaccinated or not against Covid-19. 19.
Thus, the scientists discovered that one in five women had menstrual disorders after being vaccinated, but 82% had no change to report. “A side effect is common when it affects 1 in 10 or more people, explains Alexandra Alvergne. Without saying that period disturbances are common, we can in any case say that they are frequent enough to make them an expected side effect.“
More risk in women who smoke or who have already had Covid-19
Next, the researchers observed that the likelihood of having menstrual changes was higher in women who had already been sick with Covid-19, who smoked or who did not use contraceptives containing estradiol. In the first case, the women had the following symptoms: short cycles (less than 24 days), longer periods (more than 8 days), heavier periods or even bleeding between cycles.
By comparing the data of vaccinated women with those who were not, the scientists obtained reassuring results: vaccination against Covid-19 would not cause worrying menstrual changes. In other words, by being vaccinated, women were not more likely to have disturbed or irregular cycles. “What should be remembered is that these period disturbances can be frequent but not serious, concludes Alexandra Alvergne. We know, for example, that the vaccine can cause fatigue or fever. It’s always better to know so you don’t have to worry.”
Advertisement
