The one-in-eight statistic doesn't accurately reflect the average woman's breast cancer risk. Age is the most important risk factor for breast cancer. That means the older a woman is, the greater her risk of developing the disease. Statistics from the US National Cancer Institute show that a woman's chance of being diagnosed with breast cancer by age is:
- From age 20 to age 30 . . . 1 in 2,000
- From age 30 to age 39 . . . 1 in 229
- From age 40 to age 49 . . . 1 in 68
- From age 50 to age 59 . . . 1 in 37
- From age 60 to age 69 . . . 1 in 26
- Ever . . . . . . . . . . . . . . . . . . . .1 in 8
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