Menstruation may change after receiving the vaccine, research has found

Shortly after vaccine for corona virus came into use a year ago, some women began reporting menstrual irregularities after receiving the dose.

Some say that their seasons are late. Some have reported that bleeding occurs more frequently than usual or that the blood is more painful. Some women who have stopped menstruating and who have not had a menstrual period for several years report that they have started menstruating again.

A study published Thursday found that female menstruation yes has changed after receiving the coronavirus vaccine. The researchers also reported that women who received the vaccine had a shorter period of time after receiving the vaccine than those who did not.

However, their duration, which came almost the next day rather than the average, was not long, and the results were short-lived, as the length of the journey returned to normal in a month or two. For example, a person who has a 28-day menstrual cycle that lasts for 7 days may still have 7 days, but that period lasts 29 days.

This delay was most pronounced in women who received both doses of the vaccine at the same time. The researchers found that the women were bathing two days later than usual.

The study, published in the journal Obstetrics & Gynecology, is one of the first to confirm anonymous reports from women who say their menstrual cycle was delayed after receiving the vaccine, says Hugh Taylor, head of the gynecology, gynecology and science department. School of Medicine.

“It proves there is something real,” said Taylor, who has heard of the gradual circulation from her patients.

At the same time, he added, the changes that were observed in the study were not significant and seemed to be temporary.

“I want to make sure we keep people away from the myths that are out there about reproduction,” Taylor said. “A round or two of times can be unpleasant, but it will not damage the product.”

Its message is different for women with menopause who have bleeding from the vagina or vision, whether they have been vaccinated or not, who warn them that they may have serious medical problems and should be examined by a doctor.

The main problem with this study, which looked at the population of the United States, is that the model does not represent the whole world and cannot be presented to the general public.

The information was provided by a company called Natural Cycles, which has a fertility tracking program. Users are more likely to be white and college students than ordinary US people; They are also thinner than most American women – weight can interfere with menstruation – and they do not use hormonal contraceptives.

Women of childbearing age will find that their findings are encouraging, said Diana Bianchi, a physician and director of the Eunice Kennedy Shriver National Institute for Child Health and Human Development (NICHD). (The National Institutes of Health’s Office of Research on Women’s Health and NICHD funded the study, as well as research-related projects at Boston University, Harvard Medical School, Johns Hopkins, and Michigan State University).

“Health workers can say, ‘If you have an extra day, it’ s fine, it ‘s not a matter of concern,” Bianchi said.

The study was conducted by researchers at Oregon Health & Science University and Warren Alpert School of Medicine at Brown University, in collaboration with researchers from Natural Cycles, whose program is used by millions of women worldwide.

Unidentified data from users who gave permission for their information to be included in this study provided ample evidence of how women’s behavior changed during the epidemic.

The researchers examined the records of about 4,000 women who monitored their menstrual cycles in a timely manner, including 2,400 who received coronavirus vaccine and approximately 1,550 who did not follow up. All were U.S. residents between the ages of 18 and 45 who followed their menstrual period for six months.

For those who received the vaccine, the researchers also looked at three ways to make the vaccine and post-vaccination to change and compare with the same length of six months in non-menopausal women.

In general, vaccination associated with changing the cycle duration less than a full day, on average, after dose of the vaccine, compared to pre-vaccinated cycles. The vaccinated group did not change significantly in six months.

Future research has actually examined other aspects of the menstrual cycle, such as whether the time was heavy or very painful after vaccination.

The results of the new study may not be the same for all women. Indeed, the major change in cycle length was driven by a small group of 380 pregnant women who experienced a two-day change in their routine, said Alison Edelman, professor of obstetrics and gynecology at Oregon Health & University. general secretary of the article.

Some women who have been vaccinated have a cycle that lasts eight days longer than usual, which is considered very important, said Edelman.

“While the length of the cycle according to the population was at least one day, for a person it can be a very important factor, depending on how they feel and why they believe in their menstrual cycle,” he said. “You might be expecting a baby, you’re worried about pregnancy, maybe you’re wearing white pants.”

It is not known why menstruation can be affected by vaccination, but many women who menstruate regularly experience irregular or irregular periods. Hormones produced by the hypothalamus, pituitary gland, and ovaries drive the menstrual cycle and can affect the environment, stress, and lifestyle changes.

(The changes observed in this study were not caused by the circumstances associated with the epidemic, the authors said, since women in the non-vaccinated group are also living during the epidemic.)

It is not known if any vaccine affects the menstrual cycle because clinical trials of vaccines and medications do not look at the contents of the data unless researchers try contraceptives or increase fertility or prevent pregnancy.

“We hope that this information will encourage vaccinators and clinical trials to ask questions about menstruation, as other important indicators are included,” Bianchi said.

More, Edelman said, is important, such as knowing if you have been vaccinated is possible with a headache or fever.

Edelman states: “Men bathe one week a month, sometimes longer. “If you extend the time by 40 years, it’s 10 years of menstruation.”

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