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Key Takeaways
Now, researchers are beginning to formally examine the connection.
Experts say many factors can affect menstruation.
Researchers will begin conducting studies to assess whether these symptoms can be attributed to vaccination.

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How Can Vaccines Potentially Affect Menstruation?
The mechanism behind the vaccines potential effects on menstruation is yet to be determined.
Not surprisingly, it is easily perturbed, and menstrual irregularity is a very common problem with many causes.
But we can imagine some ways in which vaccines might impact periods.
Some suspect that there might be a specific component in the vaccine affecting the menstrual cycle.
Unfortunately, menstrual changes are not typically reported in vaccine trials, Taylor says.
There are some studies that suggest menstrual cycle disturbances with some other vaccines.
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This will allow scientists to provide further evidence that there is no effect on fertility.
If the timing of periods is changing, the timing of ovulation might also change, Male says.
There is no evidence showing that COVID-19 vaccines are linked to infertility.
COVID infection can be a serious and life-threatening condition.
The advantages of COVID vaccination cannot be overemphasized.
We highly recommend the COVID vaccine.
The benefits clearly outweigh the minor side effects.
For the most recent updates on COVID-19, visit ourcoronavirus news page.
National Institutes of Health.Item of Interest: NIH funds studies to assess potential effects of COVID-19 vaccination on menstruation.
Male V.Menstrual changes after covid-19 vaccination.BMJ.
The American College of Obstetricians and Gynecologists.COVID-19 Vaccination Considerations for ObstetricGynecologic Care.