Yes, the corona vaccine causes a change in circulation.

Here's what's important to know about it

For many months women have been complaining that after receiving the corona vaccine they experience changes in their menstrual cycle.

After much uncertainty and perhaps even mouth clogging - a new study has found that the vaccine does cause changes, but they are mild and harmless

Walla!

health

09/01/2022

Sunday, 09 January 2022, 23:20 Updated: 23:21

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In the video: Bennett updates at Sheba Hospital on the results of the research in the fourth vaccine (Walla system!)

After months of many women complaining about a change in their menstrual period after a corona vaccine, or its complete disappearance for a few months, a new study has found that the vaccine may indeed cause a change in the length of the menstrual cycle.

The good news: the change is temporary and harmless.

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To the full article

Thanks to global collaboration and advances in medical science, researchers have been able to produce a number of vaccines for the corona virus in record time.

However, as with any proven and experienced treatment, this life-saving vaccine causes some side effects, some talked about and some less.

These side effects have made quite a few women wonder whether changes in their menstrual cycle can be linked to the corona vaccine, for some they have even caused concern and further avoidance.

The new study, published in the journal Obstetrics & Gynecology, used data from the Natural Cycles menstrual app to examine a possible change in the menstrual cycle.

The women documenting their cycles in the app gave their consent to share unidentified data for use in the study, and the sample group eventually included 3,959 women - 2,403 vaccinated and 1,556 unvaccinated.

Finally there is evidence that the vaccine causes damage to the menstrual cycle.

Vaccinated woman (Photo: Reuters)

The researchers focused on vaccinated and unvaccinated U.S. residents aged 18 to 45 who reported a mean menstrual cycle (24 to 38 days). They then examined six cycles for both groups, and reviewed three consecutive cycles before and after the vaccine for the vaccinated group and six consecutive cycles for With

this information, they were able to determine if and how the length of menstruation in the immunized group changed, and if these changes were significant compared to unvaccinated women.

"There is an effect on the cycle, and it is a measurement"

The findings showed that overall, receiving the corona vaccine was associated with prolonging the menstrual cycle by less than a day (0.71) compared to the participants' cycles before the vaccine.

No significant changes were detected in the unvaccinated group compared to their baseline data.

While the vaccinated group saw a small increase in the total length of the menstrual cycle, it was not related to an increase in the number of bleeding days, meaning the actual menstruation remained the same.

Although a change was observed during menstruation, lead researcher Dr. Allison Edelman of the University of Oregon Health and Science said the variations observed were within the normal range. However, further research is needed to determine if the vaccine has any effect on other menstrual symptoms such as pain, Emotional and bleeding intensity.

The effect is temporary, not related to your fertility.

Woman vaccinated against corona in Miami Florida, USA (Photo: AP)

"The researchers in this study saw that there is indeed a link between the vaccine and changes in the menstrual cycle, and that this link is measurable," says Dr. Itamar Netzer, a gynecologist and medical administrator in the Sharon-Shomron district of Clalit Health Services and a member of the Madat organization. They found it to be a temporary, easy and reversible difference.

According to their calculations the entire menstrual cycle lengthened by less than one day on average, with those who pulled up this average being women who received the two doses of the vaccine in the same menstrual cycle (two doses of the vaccine 3 weeks apart, and between menstruation).

"These women had a longer period of almost two days, while most of the women who received one dose had a change of much less than a day."

It is best to avoid two vaccine doses within one menstrual cycle

So for those who are still undecided whether to get vaccinated or not, it is advisable to try to design the vaccines so that two doses are not received within one menstrual cycle, although this is not a matter of principle according to Dr. Netzer, because another important finding of the study is that all cycle changes were reversible. And temporary and managed on their own within two cycles, i.e. about two months.

There are two caveats to this study that Dr. Netzer sees: the first is the homogeneity of the population included in it - most of the white college women, relatively few black women and the rest whose background and origin are unknown.

"While ethnic differences do not affect the menstrual cycle, socioeconomic differences do affect, and this study may not be diverse enough or at least does not address these differences."

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Another caveat he points out is the fact that all the women who participated in the study are women with relatively regular cycles anyway and no other gynecological diseases. "We do not know how the vaccine affects menstruation in women with gynecological diseases like endometriosis or other conditions. There may be women with certain background conditions whose menstruation is more affected." Dr. Netzer noted that the published American study is just one of several studies examining how corona vaccines affect the menstrual cycle, and other research groups may publish data on more diverse samples in the future as well.

"We see evidence of some effect of the vaccine. But fertility studies show that the vaccine has no effect on fertility, there is no change in the percentage of pregnancies, the hormonal cycle does not change Studies that have examined follicle monitoring have not shown a change following the vaccine. "So the only effect is a temporary effect on menstruation itself, and it has no clinical significance."Dr. Netzer concluded.

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