Last week, University of Illinois researchers published a study funded by the National Institutes of Health (NIH) in the journal Science Advances on menstrual cycle bleeding changes after COVID shots. The study featured a web-based survey of almost 40,000 individuals and found 42 percent of those who were menstruating reported unexpected heavy bleeding after receiving a COVID shot, while 66 percent of postmenopausal individuals reported breakthrough bleeding.1 Read more.
