One of the leading menstruation specialists in the UK, Dr. Victoria Male said that after the Covid-19 vaccine, small changes can be seen in the menstrual cycle in women, but this returns to normal in a short time.
From Imperial College London, Dr. Male rated the studies conducted in the USA and Norway as “reassuring”.
There is no evidence that the vaccine has any effect on fertility or pregnancy.
The UK Medicines and Healthcare Products Regulatory Agency (MHRA) has received more than 37,000 applications for unexpected bleeding, heavier or delayed menstrual periods after getting the Covid-19 vaccine.
Although it was said that there was no evidence of a connection between the vaccine and the menstrual cycle, scientists called for more research.
Reproductive immunologist Dr. In an article for the British Medical Journal (BMJ), Male two points mentions.
A US-based study of nearly 4,000 women using a menstrual cycle tracking app concluded that participants’ next menstrual period was delayed by half a day after a second dose of vaccine, but not after the first.
Common complaint
Women who received two doses of the vaccine in the same cycle reported a two-day delay in their menstrual cycle. However, Dr. This is highly unlikely in the UK, which recommends at least eight weeks between two doses, according to Male.
According to the study, one in 10 vaccinated women had their cycle length changed by more than eight days, compared with one in 25 unvaccinated women. But after two cycles, menstrual patterns returned to normal.
Another study of more than 5,600 people in Norway shows how naturally menstrual cycles can change.
About 40 percent of the participants had at least one menstrual cycle change before they were vaccinated. The most common complaint was heavier than normal bleeding.
Dr. “After vaccination, changes occur in the menstrual cycle, but these are minor changes from the natural cycle and return to normal quickly,” says Male.
She adds that women’s concerns stem mostly from “false information that Covid-19 vaccines cause female infertility.”
More research on pregnancy rates in couples trying to conceive is needed to clarify this information.
On the other hand, Covid-19 infection can “reduce sperm count and quality”.
In the UK, where approximately 51 million doses of the Covid-19 vaccine are administered to women, a study is expected to be conducted soon on those using the same menstrual cycle tracking app.
Dr. Male says it took a long time to get to that point, as menstrual and reproductive health were kept “low priority.”