Which statement is true regarding the incidence of breast cancer?

The statement that more than 50% of breast cancer cases occur in women aged 61 years or older is indeed true. This reflects the well-documented trend that breast cancer risk increases with age. Epidemiological studies consistently show that a significant proportion of breast cancer diagnoses are made in this older demographic, emphasizing the importance of age as a major risk factor for the disease. As women age, they may accumulate various risk factors associated with breast cancer, such as hormonal changes and genetic predispositions, which can contribute to the higher incidence in this age group.

In contrast, other statements do not align with the established understanding of breast cancer demographics. In younger age groups, specifically women aged 40-50, the incidence rates are generally lower than those observed in older women, countering the first statement. While there have been fluctuations in breast cancer rates due to factors like screening practices and treatment advancements, the overall incidence has not shown a consistent decline over the past decade, making the third statement inaccurate. Finally, breast cancer is predominantly a disease affecting women, with men representing a small percentage of cases, debunking the notion that it affects men more than women.

Thus, the evidence supports that the majority of breast cancer cases are indeed found in women aged