More than a year ago, data began to come to light on the possible interference between the Covid vaccination and menstruation. In Spain, a study with 1,600 women offered clear preliminary data, that the vaccine altered the rule in six out of 10.
Subsequently, studies were added and from the field of pharmacovigilance, the Spanish Agency for Medicines and Health Products came to affirm that there was not a sufficient relationship between vaccination with AstraZeneca (the first that women of childbearing age began to receive) and changes in the menstruation. Subsequently, he studied the relationship again.
However, other studies have delved into this relationship and, beyond the vaccine, with the disease and with persistent Covid. In fact, the alteration of menstruation is one of the 200 symptoms that have been cataloged in Spain within the long covid.
Added to the above evidence is now a macro-survey with more than 39,000 results that is published in Science Advances. In 90% of the cases the respondents were called women and in 9.1% as diverse gender.
The main conclusion of this study is that 42% of the respondents who had regular menstrual cycles bled more heavily after vaccination. Among those most likely to have this happen, according to the study, were those who were premenopausal, Hispanic or Latina, those who had been pregnant and those with gynecological conditions such as endometriosis or polycystic ovary syndrome.
On the other hand, among the respondents who usually did not have their period – due to taking reversible contraceptives or gender-affirming hormones. Even, says the study, women already in menopause experienced bleeding. “In general, changes in menstrual bleeding are common and not dangerous, but attention to these experiences is necessary to foster confidence in medicine,” write Katharine Lee and her team, stressing in a statement the need to put the menstruation in the focus of science.
From Spain, two researchers on this same issue are Ana Beatriz Rodríguez Moratinos, professor of Physiology at the University of Extremadura, and Cristina Carrasco, a postdoctoral researcher, both from the Neuroimmunophysiology and Chrononutrition group at said university. Science Media Center Spain that this study is pioneering both on the subject and in the number of participants. This study “describes for the first time the appearance of spontaneous bleeding in a high percentage of non-menstruating people, either due to menopause or contraceptive and transgender hormonal treatments, after inoculation with the SARS-CoV-2 vaccine. The data obtained indicate that these alterations would be temporary and that, among the factors significantly influencing their appearance, would be age, suffering from systemic side effects associated with the vaccine (fever and/or fatigue), history of pregnancies and childbirth and ethnicity, among others.
For the researchers, this research “sheds light on a phenomenon initially reviled by society in general and whose scientific evidence will be enriched in the coming months with the publication of other similar studies, including those carried out in countries with high rates of population vaccination, like Spain”.
#women #regular #periods #bled #vaccinated #Covid
