Which medication is specifically known to affect breast tissue?

Which medication is specifically known to affect breast tissue?

• A. Hormone replacement therapy (HRT)
• B. Antibiotics
• C. Antihistamines
• D. Statins

Answer: (A)

Medications that affect breast tissue are those that alter hormonal stimulation of the breast. Hormone replacement therapy introduces estrogen, often with a progestin, which stimulates the breast’s ductal and lobular tissue. This can cause tenderness, fullness, and enlargement, and it can increase breast density on mammograms, making imaging findings harder to interpret. Among common drugs, HRT is the one most clearly known to cause these breast tissue changes. Antibiotics don’t change breast tissue structure; they treat infection. Antihistamines don’t stimulate breast tissue; they affect allergy symptoms. Statins affect cholesterol metabolism and generally don’t impact breast tissue.

Medications that affect breast tissue are those that alter hormonal stimulation of the breast. Hormone replacement therapy introduces estrogen, often with a progestin, which stimulates the breast’s ductal and lobular tissue. This can cause tenderness, fullness, and enlargement, and it can increase breast density on mammograms, making imaging findings harder to interpret. Among common drugs, HRT is the one most clearly known to cause these breast tissue changes.

Antibiotics don’t change breast tissue structure; they treat infection. Antihistamines don’t stimulate breast tissue; they affect allergy symptoms. Statins affect cholesterol metabolism and generally don’t impact breast tissue.