“At what age do most women start menopause?”

The transition to menopause begins in the mid 40s for most and takes 5-10 years to complete. Symptoms may begin before your bleeding pattern changes, but for some women, the bleeding pattern is the first thing to change! It is a great idea to talk to your Gyn in your mid 40s because more and more science points to preemptive therapy to optimize midlife health.
Good luck and remember, we all will age, the goal is to age well!