Menstrual irregularities and cardiometabolic risk: A systematic review and meta-analysis

Menstrual cycle irregularities have been linked to several health hazards; it is unclear how these risks relate to cardiovascular disease (CVD). The purpose of this meta-analysis was to compile data regarding the relationship between irregular menstruation and women's cardiovascular and metabolic outcomes.

A systematic search of online databases was conducted for studies comparing cardiovascular and metabolic outcomes between women with irregular and regular menstrual cycles. Pooled risk ratios (RR) and 95 % confidence intervals (CI) were calculated adopting a random effects model.

Eight observational studies comprising 354,419 women were included. Women with irregular menstrual cycles showed a significantly increased risk of overall cardiovascular disease (RR: 1.43, 95 % CI: 1.01 to 2.03) compared to those with regular menstrual cycles. Subgroup analyses for specific cardiovascular outcomes demonstrated increased risks of coronary artery disease (RR: 1.29, 95 % CI: 1.14-1.46), hypertension (RR: 1.50, 95 % CI: 1.23-1.82) and heart failure (RR: 1.45, 95 % CI: 1.11-1.89) in women with irregular cycles compared to those with regular cycles. Additionally, the risk of cerebrovascular disease was higher in women with irregular cycles compared to those with regular cycles (RR: 1.62, 95 % CI: 1.10-2.40), Notably, patients with irregular menstrual cycles were found to have a higher risk of developing diabetes mellitus (RR: 1.75, 95 % CI: 1.31-2.34) and hypercholesterolemia (RR: 1.33, 95 % CI: 1.16-1.52).

Menstrual irregularities are associated with greater risks for several cardiovascular, cerebrovascular and metabolic diseases. Thus, highlighting the importance of regular check-ups to prevent disease occurrence in these patients.