No. Although it's true that the risk of breast cancer increases as we grow older, breast cancer can occur at any age. From birth to age 39, one woman in 231 will get breast cancer (<0.5% risk); from age 40-59, the chance is one in 25 (4% risk); from age 60–79, the chance is one in 15 (nearly 7%).
Assuming you live to age 90, the chance of getting breast cancer over the course of an entire lifetime is one in 8; the overall lifetime risk is 12.5%.
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