For every disease there are some risk factors it is same with breast cancer. There are some risk factors which are not under the control of a person and some risk factors are those which depend on the life style of a person.
External and internal environment. External environment is food, water, pollution, sound noise, smoke etc. Internal environment is hereditary genes, hormones, stress. Hereditary risk it has been known that woman whose sister and mother had breast cancer have a more chances to develop the breast cancer when a women inherits a susceptible gene from her parents.
Risk of breast cancer also increases with age. This is also one of the factor which a person can not control. If some gene changes are running in a family that means if the breast cancer is hereditary the chance of getting affected automatically increases without any control on it. If a woman is having cancer in one breast the chance of getting cancer in another breast or in another part of same breast increases. White women are at high risk of breast cancer than Asian women.
One more factor aging but you cannot control this factor. Females who are involved in physical activity have less chance to develop breast cancer as compare to those females who have sedentary life style. There is no clear about except alcohol and cigarette consumption.
Some hormonal factors increase the risk of breast cancer. A woman who started her menstrual period before the age of 12 has a slightly increased risk of developing breast cancer. This is also true of women that have menopause after 55, women who have a first child after age 30, and women that have never had children.
Overweight individuals have higher risks of breast cancer than normal weight individuals. The risk usually increases especially for women after menopause. Restoring back to a normal weight by eating healthy foods and engaging in worthwhile healthy activities and exercise routine will usually lower the risk.