If young women take some simple steps during adolescence, they can reduce the risk of breast cancer later in life. Studies show that puberty can be a milestone in the development of breast cancer. Regular exercise is believed to delay a girl’s early menstrual cycle. This is when the body produces the hormones that cause most breast cancer. According to research, only four hours of weekly exercise can delay hormone levels for up to 12…"The Risk of Breast Cancer Simple Steps to Prevent Disease"