Question

The changes involved in women's climacteric occur gradually over a 10-year period, during which

Answer 1

While the outline is a ten year period, the average woman is only 3-4 years. During this time, a woman's menstrual cycle begins to shorten. In her twenties it runs roughly 28 days, by her forties the cycle is roughly 23 days. At this time the cycles also become much more irregular in timing.