Menstrual changes after COVID vaccines may be far more common than previously known; A study found that 42% of people with regular menstrual cycles said they bled more heavily than usual after shots
by Paul Alexander
An analysis published Friday in the journal Science Advances found that 42% of people with regular menstrual cycles said they bled more heavily than usual after vaccination.
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Menstrual changes after Covid vaccines may be far more common than previously known
“The new survey started in April 2021, around the time people began to report unexpected bleeding and heavier flow post-vaccine. However, these anecdotes were at the time met with the rebuttal that there was no data linking menstrual changes to vaccination.”