At what age are breast cysts least common in women?

Breast cysts, which are fluid-filled sacs within the breast, are most commonly found in younger women, particularly those between the ages of 30 and 50. As women age, especially after menopause, the incidence of breast cysts tends to decrease significantly. By the time women reach their 60s, 70s, and 80s, the breast tissue changes due to hormonal fluctuations and aging, making cyst formation less common. Therefore, breast cysts are least common among women aged 70 and older. The option indicating 70 years aligns with the understanding of breast tissue changes over time, highlighting that women in this age group experience a reduction in the prevalence of breast cysts compared to younger counterparts, especially when compared to earlier decades of life when hormonal activity was more prevalent.