How Coronavirus Vaccines Affect Menstruation Researchers in immunology at Imperial College London have found that the impact of coronavirus vaccines on women's menstrual cycles is small and short-lived.. However, other studies do not find any effect of vaccines on fertility at all..

As coronavirus vaccines spread to different populations, conspiracy theorists have begun to promote all sorts of crazy claims.. Some of the most popular, unfortunately, concerned the negative impact of vaccines on the body of pregnant women and, in general, how they affect women.. It was alleged, in particular, that vaccination against coronavirus could allegedly lead to infertility, and this is confirmed by menstrual irregularities.. Studies were required to refute these claims, and they were carried out. One of the latest was carried out by scientists at Imperial College London..

Coronavirus vaccines can affect periods They have found that the COVID-19 vaccine, in some cases, can delay the onset of menstruation by about one day, but by the next cycle everything will be back to normal. At the same time, this delay, as observations have shown, occurs less often in people who take combined contraception that is not based only on progesterone.. Therefore, this effect may be reduced by temporary changes in the level of sex hormones.. Approximately 8% of women reported heavier than usual monthly cycles prior to vaccination, and this number increased to 14% among those who received vaccinations..

When Coronavirus Vaccines Affect Monthly Cycles Study Findings Are Absolutely Convincing and Positive. All changes with monthly cycles after vaccination are small and short-term. COVID-19 vaccine does not affect female fertility. Therefore, under no circumstances should a woman refuse to be vaccinated for reasons related to concerns about problems of the reproductive system..

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