Breast cancer occurs due to a change or mutation of the DNA of cells of the breast. DNA (deoxyribonucleic acid) is the chemical components that make up the human genome. Deoxyribonucleic acid gene mutation has an inherited characteristic and is not inherited. Lymph nodes are one of the causes of the spread of breast cancer. Breast cancer cells can enter lymph vessels and begin to grow in the lymph nodes. If breast cancer cells have reached the lymph vessels, usually accompanied by the swelling of lymph nodes in the armpit.
Factors that could cause the occurrence of breast cancer include:
1. Not having children
Women who do not have children have an increased risk of developing breast cancer greater than women who had children
2. Pregnancy at old age
Pregnant at a young age may reduce breast cancer risk by lowering the total number of menstrual cycles
3. Use of contraceptives that are not appropriate
use contraceptives that are not appropriate in the long term, can cause increased risk of breast cancer.
4. Using post-menopausal hormone therapy
Using post-menopausal hormone therapy may increase the risk of breast cancer and breast cancer deaths.
5. Not Breastfeeding Children
Breastfeeding a child in the long one and a half to two years, can reduce the risk of breast cancer. Breastfeeding a child can reduce the risk of breast cancer because breast feeding will reduce the total number of menstrual cycles a woman.
Obesity is a disorder or disease, characterized by the accumulation of excessive body fat tissue. Obesity is caused by consuming more calories than needed by the body. Obesity can increase the risk of breast cancer, especially for women after menopause, because. in most postmenopausal women estrogens derived from fat tissue.