Breast Cancer

Part III

Lifestyle- Related Factors
Breast feeding:
Women who have never breastfed are slightly more likely to develop breast cancer than women who have breastfed for more than a year.

Oral contraceptive use:
Studies have suggested that taking the contraceptive pill very slightly increases a woman's chance of developing breast cancer.

Hormone replacement therapy (also known as postmenopausal hormone therapy)
Women who are taking hormone replacement therapy, or have recently taken it, have a slightly increased risk of breast cancer.

Alcohol:
Drinking a lot of alcohol over many years can increase the risk.

Obesity:
Being overweight, especially for woman after menopause has increase risk of developing breast cancer. Small amount of estrogen is produced by fat tissues. Having more fat tissues can increase your estrogen level, and thus, increase the risk.