Genetics
Studies have indicated that there is a hereditary inclination towards experiencing PMS symptoms. Surveys have found that around 70% of daughters who have significant PMS symptoms also have mothers who experience similar severity of symptoms. In a research conducted by the University of North Carolina at Chapel Hill and the National Institute of Mental Health in 2007, scientists were able to identify the specific genetic variation that is associated with mood disorders linked to hormonal changes during the menstrual cycle.
Substance Abuse and its Effects on the Menstrual Cycle and PMS
Substances, such as alcohol, can significantly affect hormone levels and have a profound impact on the menstrual cycle and the severity of premenstrual syndrome (PMS). Notably, illegal substances like cocaine and methamphetamines can lead to lighter periods, alter the duration of periods, or even cause them to cease completely. These substances are frequently the direct cause of mood swings and other psychiatric symptoms that may escalate during PMS. Additionally, studies indicate that women who consume alcohol, particularly heavy drinkers, tend to experience more severe PMS symptoms.