How many women are in high risk to breast cancer in the US?
How many women are in high risk to breast cancer in the US?
Looking for the percentages of women with high risk to have breast cancer.
Answer by lo_mcg
Those who are at high risk of breast cancer are those who carry one of the rare inherited BRCA genes known to be responsible for hreeditary breast cancer.
Only 5 ? 10% of all beas cancer cases are hereditary.
If a parent carries one of the BRCA genes, each of their children has a 50% chance of inheriting that gene. For a female child, inheriting the gene means a 50 ? 80% chance of developing breast cancer over a lifetime of 80+ years.
The biggest risk factor for breast cancer is age; 80% of those diagnosed are over 50.
One in eight women will develop breast cancer over a lifetime of 80+ years (in the UK this figure is quoted as one in nine). Of those, 5 ? 10% will have been at increased risk of breast cancer due to carrying one of the BRCA genes.
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