Scientifically accepted risk factors:
Gender – being a woman is the strongest risk factor. Men can also develop breast cancer, but it is 100 to 150 times less common.
Age – increasing age is a well known risk factor for many cancers. Breast cancer is very rare below age 20, but increases steadily every year thereafter.
Age of menarche - The age at the time of your first period is a very important risk factor. As a simple rule, the older you were when your period began, the lower your risk of breast cancer.
Age of first pregnancy - Completion of a full term pregnancy has for centuries been recognized as a protective event in the development of breast cancer. The early the pregnancy, the lower the risk.
Possible risk factors (scientific data is still pending)
Gender – being a woman is the strongest risk factor. Men can also develop breast cancer, but it is 100 to 150 times less common.
Age – increasing age is a well known risk factor for many cancers. Breast cancer is very rare below age 20, but increases steadily every year thereafter.
Age of menarche - The age at the time of your first period is a very important risk factor. As a simple rule, the older you were when your period began, the lower your risk of breast cancer.
Age of first pregnancy - Completion of a full term pregnancy has for centuries been recognized as a protective event in the development of breast cancer. The early the pregnancy, the lower the risk.
Possible risk factors (scientific data is still pending)