Perimenopause is a natural process that varies in timing for each woman. While most women notice changes in their 40s, some may experience perimenopause as early as their mid-30s.

During perimenopause, the levels of estrogen, the primary female hormone, fluctuate in an erratic manner. This can lead to changes in menstrual cycles, such as irregularity, either longer or shorter periods, and the occasional absence of ovulation.

The official marker of menopause is reached when a woman has gone through a continuous 12-month period without a menstrual period. This signals the end of perimenopause...