Breast implants do not cause breast cancer. Breast cancer occurs in slightly more than ten percent of women.  Excellent scientific reviews indicate that the rates of breast cancer are actually lower in women who have had a breast augmentation procedure – this is thought to be due to the fact that women seeking breast enhancement actually have less breast tissue, thus reducing their overall risk for breast cancer. The rates of autoimmune diseases (lupus, rheumatoid arthritis, etc.) among breast implant patients are the same as the rates of autoimmune diseases in the general population.  Many studies have reviewed the presence of autoimmune diseases, and it has been established that neither saline breast implants nor silicone gel filled breast implants cause autoimmune diseases.