World Health Organization (WHO), says that breast cancer is the most common type of cancer in women all around the world and that most types of it are very treatable, and have very high rates of survival if it's being detected and treated immediately by doctors. Researchers are developing a method , tgat will be more comfortable and more cost effective compared to traditional mammograms.. The method is a blood test that could help detect breast cancer 5 years before any symptoms become apparent.