It is not clear whether the following affect the risk of breast cancer: Hormonal contraceptives Environment Studies have shown that some factors have little or no effect on the risk of breast cancer. Cancer prevention clinical trials are used to study ways to prevent cancer. New ways to prevent breast cancer are being studied in clinical trials. Avoiding risk factors and increasing protective factors may help prevent cancer. Avoiding cancer risk factors may help prevent certain cancers. Risk factors include smoking, being overweight , and not getting enough exercise.
It's also been suggested that regular exercise can reduce your risk of developing breast cancer by almost as much as a third. If you've been through the menopause , it's particularly important that you're not overweight or obese. This is because being overweight causes more oestrogen to be produced by your body, which can increase your risk of some types of breast cancer.
Sign up now Breast cancer prevention: How to reduce your risk Breast cancer prevention starts with healthy habits — such as limiting alcohol and staying active. Understand how to reduce your breast cancer risk. By Mayo Clinic Staff If you're concerned about developing breast cancer, you might be wondering if there are steps you can take to help prevent breast cancer.