A new pre-print study suggests another way in which the vast chemical reaction that is the human body is impacted by vaccinations against the coronavirus.
The study links the vaccines to changes in the menstrual cycles of women taking contraceptives.
The study, published on MedRxiv.org, noted that menstrual changes are more significant in women who are taking contraceptives.
The study, which was done in Britain, was triggered by an increase in reports to Britain health service that the vaccine had impacted menstrual periods.
The study consisted of 1,273 British women responding to questionnaires about their vaccinations and subsequent menstrual periods. The study covered women who had the Pfizer-BioNTech, Moderna and AstraZeneca vaccines.