What causes benign breast disease?

What causes benign breast disease?

Common causes of noncancerous breast lumps include:

• Changes in breast tissue (fibrocystic breast changes).
• Breast infection (mastitis)
• Scar tissue from a breast injury.
• Hormone fluctuations, especially during menstruation, pregnancy or menopause.
• Medication use, such as hormonal contraceptives (birth control pills) and hormone replacement therapy.
• Caffeinated beverages.