Risk Factors

Who is at risk for breast cancer?

All women are at risk. Women with either a mother, sister, or daughter with breast cancer, particularly if it occurred before menopause or in both breasts, are at higher risk. However, only 5-10% of breast cancers are due to heredity.

What role do diet and nutrition play in reducing one's breast cancer risk?

There is an increasing body of knowledge suggesting that a diet rich in fruits, vegetables and grains may play a role in lowering breast cancer risk. However, there is no conclusive evidence.

How does exercise influence one's breast cancer risk?

Some studies suggest that breast cancer risk is lower among female athletes and among women who have engaged in moderated physical activity. However, there is no conclusive evidence.

Will drinking alcohol increase one's risk for breast cancer?

Some research studies have shown an association between alcohol consumption and an increased risk of breast cancer.

Are women who have fibrocystic changes in their breasts at higher risk for breast cancer?

For the majority of women, fibrocystic changes are not associated with an increased risk of breast cancer.

Are women who use birth control pills at an increased risk for breast cancer?

Most research studies have not found an increased risk of breast cancer in women who have used birth control pills.

Is obesity a risk factor for breast cancer?

Obesity itself is not a risk factor. Weight gain is a much greater risk factor, especially if the weight gain occurs after menopause.

For more information on any of the topics above, please visit www.komen.org.