Perimenopause can last months to years for some patients

Dear Doctor: I’m a healthy and active 42-year-old, but I’ve been noticing a change in my periods lately. They’re not as regular as before, and they’re a lot shorter. Could this be perimenopause? What’s going on, and what else is going to happen?

Dear Reader: Perimenopause is the transitional time that leads up to a woman’s final menstrual cycle. For some women, perimenopause can last for as little …