Which is a common side effect of hormone therapy?

• A. Nausea, irregular vaginal bleeding, breast tenderness, headaches, and mood changes
• B. Weight loss
• C. Rash
• D. Drowsiness only

Answer: (A)

Hormone therapy commonly affects many body systems because the hormones influence tissue in the uterus, breasts, brain, and GI tract. That broad impact leads to a set of familiar side effects: nausea, irregular vaginal bleeding, breast tenderness, headaches, and mood changes. Nausea can occur as the gut is influenced by the hormones; irregular bleeding is common in the early months as the uterine lining responds to circulating estrogen and progestin. Breast tenderness results from hormonal stimulation of breast tissue. Headaches can arise from fluctuations in hormone levels affecting blood vessels and brain chemistry. Mood changes reflect the brain’s response to these hormonal shifts.

Weight loss isn’t typically described as a common direct side effect of hormone therapy, and rash isn’t a standard side effect unless an unrelated reaction occurs. Drowsiness alone isn’t characteristic either; while fatigue or sleep disturbances can happen, they aren’t the defining pattern of hormone therapy side effects.