How does the menopausal transition affect the follicular phase of the menstrual cycle?

The menopausal transition brings about a variety of hormonal changes that can significantly impact the menstrual cycle, particularly during the follicular phase. As women approach menopause, the ovaries gradually become less responsive to follicle-stimulating hormone (FSH), which leads to alterations in the regularity and duration of the menstrual cycles.

During this transitional phase, the follicular phase can compress in duration. This is primarily due to fluctuating hormone levels, particularly estrogen, which affects the development of follicles. As ovarian reserve diminishes and ovulation becomes less predictable, the entire cycle can shrink, leading to shorter follicular phases as women experience more anovulatory cycles, where ovulation does not occur.

Understanding this aspect of the menopausal transition is essential for health practitioners and those studying menopause, as it highlights the physiological changes women experience during this time. Recognizing that the follicular phase may be shortened helps in addressing symptoms related to the transition and in providing appropriate care or management strategies for women undergoing menopause.