During which phase do women experience a decline in estrogen and progesterone levels?

The phase during which women experience a decline in estrogen and progesterone levels is menopause. This biological process signifies the end of a woman's reproductive years, typically occurring between the ages of 45 and 55. During menopause, ovarian function decreases, leading to a significant drop in the production of these hormones.

This hormonal decline can lead to various physiological changes and symptoms, such as hot flashes, mood changes, and changes in menstrual patterns. Menopause marks a distinct turning point in a woman's life, moving her away from her reproductive phase towards a new stage of life.

In contrast, adolescence is characterized by the beginning of hormonal changes that lead to sexual maturation, while pregnancy involves elevated levels of estrogen and progesterone to support fetal development. The postpartum phase sees hormonal fluctuations as the body adjusts after childbirth, but it does not uniquely define a consistent decline in these hormones the way menopause does.