If you are a woman with a history of an irregular menstrual cycle, then here is a word of caution about your future heart health.
Women with histories of irregular cycles at age 35 have a far greater risk of having a heart attack as they age than women in general. How much greater chance? An amazing 50% greater risk. That's significant enough for you to give serious attention to your present health. Consider this an early warning sign.
The reason for this greater risk? One possible answer is that erratic cycles are often linked with obesity. So control of your weight could greatly reduce your risk of heart attack later in life.