COVID vaccination temporarily lengthens menstrual cycle

Story at a glance

• Many people have reported changes in their menstrual cycle after getting vaccinated for COVID-19.

• A study from earlier this year reported data to suggest an average increase of one day. 

• Globally, a larger study has confirmed a link between coronavirus vaccination and a temporary increase in length of menstrual cycles.

COVID-19 vaccination temporarily lengthens the menstrual cycle by less than a day on average...