“Vaccination of vaccines among young women is motivated primarily by false claims that Covid-19 vaccines could harm their chances of future pregnancies,” Male wrote.
“Failure to thoroughly investigate reports of menstrual changes after vaccination is likely to fuel these fears,” she added.
“If a link is confirmed between vaccination and menstrual changes, this information will allow people to plan for potentially altered cycles. Clear and reliable information is particularly important for those who are confident in being able to predict their menstrual cycles to achieve or avoid ‘pregnancy’. “
The U.S. National Institutes of Health said last month it was spending $ 1.67 million to help five research teams study the potential effects of Covid-19 vaccines on menstruation.
“Immune responses to a COVID-19 vaccine could affect the interaction between immune cells and uterine signals, causing temporary changes in the menstrual cycle. Other factors that can cause menstrual changes include stress related to pandemic, pandemic-related lifestyle changes, and infection with SARS-CoV-2 (the virus that causes COVID-19). “
Male said the indications were that these changes, if they occur, are temporary and harmless.
“Most people who report a change in their period after vaccination find that it returns to normal the next cycle and, importantly, there is no evidence that vaccination against Covid-19 negatively affects fertility.” , he wrote.
Menstrual changes have been reported after covid-19 vaccines with mRNA and adenovirus vector, suggesting that, if there is a connection, it is likely to be the result of the immune response to vaccination rather than a specific vaccine component, “he added.
“Human papillomavirus (HPV) vaccination has also been associated with menstrual changes. In fact, the menstrual cycle can be affected by immune activation in response to various stimuli, including viral infection: in a study of menstruating women, about a quarter of people infected with SARS-CoV-2 experienced menstrual disorders. “
But studying these effects should not be a later thought, Male said.
Dr Jo Mountfield, vice-president of the Royal College of Obstetricians and Gynecologists in the UK, said it is understandable that women are concerned about these changes.
“There is no evidence that these temporary changes have any impact on a person’s future fertility or their ability to have children. It is important to get vaccinated as the best protection against coronavirus. This is especially important if you have planned pregnancy, as we know, unvaccinated pregnant women are at higher risk for serious COVID-19 disease, “Mountfield said in a statement.
“We support calls for more research to understand why women may experience changes in the menstrual cycle after getting the vaccine.”