Study Of Slight Change In Menstrual Cycle Duration Due To Anti Corona Vaccine
A study published in the British Medical Journal claims that women who took an anti-corona vaccine dose during their menstrual cycle had an increased average duration. According to researchers at Oregon Health and Science University in the US, women who received the vaccine per menstrual cycle experienced an average of less than one day of cycle lengthening. The study found that women experienced an increase in menstrual cycles by 0.71 days after the first dose of the vaccine and 0.56 days after the second dose.
At the same time, women who took both doses in the same cycle showed an increase of 3.91 days in the duration of the cycle. In women who took a single dose of the vaccine in each menstrual cycle, post-vaccination, there was an increase in cycle duration by only 0.02 days. At the same time, women who took both doses in the same cycle increased their cycle by 0.85 days compared to women who did not get the vaccine.
Study on 19,622 women
Researchers have found that changes in cycle duration were not different when taking either dose of the anti-coronavirus vaccine. A total of 19,622 women took part in this international study. Of these, 14,936 had received the dose of anti-coronavirus vaccine, while 4,686 were not vaccinated.
How was the analysis done?
The researchers analyzed data for at least three menstrual cycles before vaccination and at least one cycle after vaccination. In addition, women without vaccination analyzed data for at least four consecutive cycles at equal intervals. went.