It is important to note, since this is an observational study, that it cannot say that having premenstrual disorders causes early menopause. Instead, the results show that there is a correlation between the two, said senior study author Dr. Donghao Lu, an associate professor in the department of medical epidemiology and biostatistics at Karolinska Institute.

Link to the study: Premenstrual Disorders, Timing of Menopause, and Severity of Vasomotor Symptoms