Lead Author: Wang, et al.
Original date of publication: 11/01/2022
Link: https://pubmed.ncbi.nlm.nih.gov/35841938/
Summary Context
Study of 3,858 women finds that covid vaccine, rather than the infection itself is associated with menstrual irregularities
Comments
This well-designed study looked at menstrual irregularities but stratified by vaccine type, previous covid-19 infection, and other details. Even after adjusting for confounding variables, the study found increases from both mRNA vaccines and viral vector vaccines.
Abstract or Results, Key Passages
” COVID-19 vaccination may be associated with short-term changes in usual menstrual cycle length, particularly among women whose cycles were short, long, or irregular before vaccination.” “Messenger RNA and adenovirus-vectored vaccines were both associated with this change. SARS-CoV-2 infection was not associated with changes in usual menstrual cycle characteristics.”
Keywords: adverse eventscovid vaccinationfatigueJohnson & Johnsonmenstrual bleedingmenstrual cycleModernamRNAOxfordPfizer
Full Author List: Siwen Wang, Jasmine Mortazavi, Jaime E Hart, Jennifer A Hankins, Laura M Katuska, Leslie V Farland, Audrey J Gaskins, Yi-Xin Wang, Rulla M Tamimi, Kathryn L Terry, Janet W Rich-Edwards, Stacey A Missmer, Jorge E Chavarro
