What is the main cause of breast cancer?

or:What is the main cause of breast cancer?or:The causes of breast cancer aren't fully understood, making it difficult to say why one woman may devel

or:What is the main cause of breast cancer?

or:The causes of breast cancer aren't fully understood, making it difficult to say why one woman may develop breast cancer and another may not.However, there are risk factors that are known to affect your likelihood of developing breast cancer. Some of these you can't do anything about, but there are some you can change:AgeFamily historyPrevious diagnosis of breast cancerPrevious benign breast lumpBreast densityExposure to oestrogenBeing overweight or obeseBeing tallAlcoholRadiationHormone replacement therapy (HRT)Contraceptive pill

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