According to risk factors and Kodim Moningkey, specific causes of breast cancer is still unknown, but there are many factors that have an influence on estimated occurrence of breast cancer include:
1. Reproductive factors
Reproductive characteristics associated with risk of breast cancer is nuliparitas, menarche at a young age, menopause at older age, and her first pregnancy at older age. The main risk of breast cancer is age. Estimated, the period between the occurrence of first menstruation to the age at first pregnancy is a window of initiation of breast cancer development. Are anatomically and functionally, will experience breast atrophy with age. Less than 25% of breast cancer occurred before menopause during which the tumor is estimated onset occurred long before the occurrence of clinical changes.
2. Use of hormone
The hormone estrogen associated with breast cancer. Reports from the Harvard School of Public Health stated that there was an increase meaningful breast cancer in users of estrogen replacement therapy. A metaanalisis stated that although there is no risk of breast cancer in oral contraceptive users, women who use this drug for a long time have a higher risk for this cancer before menopause. (more…)