‘No data’ linking Covid vaccines to menstrual changes, US experts say

Some have reported changes amid vaccine rollout but experts say one unusual period is no cause for alarm'

Experts are trying to assuage concerns and combat misinformation about how the Covid-19 vaccines may affect menstrual cycles and fertility, after anecdotal reports that some people experienced earlier, later, heavier or more painful periods following the jab.

So far, there's no data linking the vaccines to changes in menstruation," Alice Lu-Culligan and Dr Randi Hutter Epstein at Yale School of Medicine wrote in the New York Times. Even if there is a connection, one unusual period is no cause for alarm."