Correlation is not causation. If you vaccinate enough people than "side effects" are just natural occurrences.
I was told in Sex Ed that women's periods were not guaranteed to be regular.
I was told in Sex Ed that women's periods were not guaranteed to be regular.
> If a link between vaccination and menstrual changes is confirmed
Even the wording in the article stops short of claiming there is evidence for any link. It's just a bad headline.