The conversion of harmful estrogen to the good estrogen happens in the liver.
Most Breast Cancer is estrogen dominant. Andreas's book The Amazing Liver Clenase explains how cancer and most all illness happens and is related to the liver, colon, kidneys, etc. Read all you can on Curezone about cancer, liver cleansing, etc. and consider getting Andreas's book. Harmful estrogens come from using plastics, like tupperware microwaving in plastic, Birth Control Pills, Hormones Replacement Therapy, and metal in the mouth may alter estrogen in the body also. Diet also
is very important as carbohydrates are stored as fat in the liver, further
causing more liver stones and difficulty in the liver detoxifying as it should.