What condition is often caused by an imbalance of estrogen and progesterone?

• A. Menopause
• B. Premenstrual syndrome (PMS)
• C. Polycystic ovary syndrome (PCOS)
• D. Hypothyroidism

Answer: (B)

Premenstrual syndrome (PMS) is a condition that often arises due to hormonal imbalances, particularly fluctuations between estrogen and progesterone levels during the menstrual cycle. In the luteal phase of the cycle, progesterone levels rise after ovulation, while estrogen may also fluctuate. If there is an imbalance, with either hormone being too high or too low relative to the other, it can lead to various physical and emotional symptoms characteristic of PMS, such as mood swings, bloating, breast tenderness, and fatigue.

In contrast, menopause is characterized by a natural decline in entire hormonal levels, particularly leading to the cessation of the menstrual cycle, so it does not fit the context of imbalances during a menstrual cycle. Polycystic ovary syndrome (PCOS) also involves hormonal imbalances but is primarily linked to androgen levels rather than just the estrogen and progesterone fluctuation that triggers PMS. Hypothyroidism involves issues with thyroid hormone production and is not directly related to the menstrual cycle’s hormonal fluctuations. Thus, PMS specifically highlights the impact of the interplay between estrogen and progesterone leading to its symptoms.