According to the study, 1,501 women who took either the flu shot alone (791) or both shots together (710) experienced their menstrual cycle increased by a statistically significant 0.4 days and 0.49 days in their first cycle after being vaccinated Their subsequent cycles were either normal or almost normal. The flu shot may cause temporary menstrual changes in some individuals, but no lasting effects on the menstrual cycle have been proven. Another thing to consider in terms of your period and your flu shot is how to deal with the actual pain of getting the vaccine Shah, there are no strong data to suggest that the. Getting a flu shot may affect your menstrual cycle, a study has revealed—although the change is temporary and typically very minor
Researchers at oregon health & science university found that. On average, individuals who received the influenza vaccine alone experienced an adjusted increase in cycle length of just 0.40 days These changes, while statistically significant, were well within the range of natural variability.
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