Menstrual Abnormalities Strongly Associated with Proximity to COVID-19 Vaccinated Individuals

In Spring 2021, MyCycleStorySM launched a secure online survey to which 92.3% of 6049 respondents self-reported menstrual irregularities occurring after the rollout of the COVID-19 injectables. Each respondent served as her own control because prior to the rollout of COVID-19 vaccination, the vast majority had regular menstrual cycles. A subgroup of 3390 respondents were only indirectly exposed to COVID-19 vaccines or the SARS-CoV-2 virus. This subgroup reported 1) being unvaccinated for COVID-19; 2) having had no COVID-19 symptoms; and 3) no positive test for COVID-19, yet a substantial majority of these women, who were only indirectly exposed to COVID-19 injectables or COVID-19 infections still had many of the same menstrual abnormalities as the 2659 women who were directly exposed to a COVID-19 injection (798), or had COVID-19 symptoms (1347), or tested positive for COVID-19 (514). Generalized linear mixed modeling was used to examine the association (not assuming causation) between abnormal menses experienced after the COVID-19 vaccine rollout by respondents who were only indirectly exposed by some degree of proximity to persons. Chi-Square, Student’s t, Kruskal-Wallis or ANOVA tests were used to assess the statistical significance of the similarities of menstrual irregularities reported by the directly exposed and indirectly exposed groups. The mean age of the entire cohort was 37.8 ± 0.1 years. The percentage of the indirectly exposed participants who reported being within 6 feet of a COVID-19 vaccinated person was 85.5%. Of these, 71.7% had irregular menstrual symptoms within one week and 50.1% had irregular menstrual symptoms within ≤3 days after exposure. When comparing daily proximity to a vaccinated person, the categories of “daily within 6 feet outside the household” versus “seldom/sometimes/daily outside 6 feet” had the highest relative risk at 1.34 (p<0.01) for heavier menstrual bleeding, early menses at more than 7 days early with a relative risk at 1.28 (p=0.03), and extended bleeding for more than 7 days with relative risk at 1.26 (p=0.04). Indirect exposure to COVID-19 vaccinated persons was significantly associated with the likelihood of the onset of menstrual irregularities. This study provides additional data to complement a growing body of evidence raising concerns regarding the safety of mRNA vaccines.