Stress has a number of ill effects on your body. Right from leading to high blood pressure to causing depression. But if you though that it could lead to cancer as well you can breathe easy. According to a new study stressful events are not associated with cancer. Especially those who from post-traumatic stress disorder (PTSD). Performed at the Boston University School of Medicine (BUSM) the study also also showed no strong evidence of associations even among select groups of the population. The general public may have a perception that stress contributes to cancer occurrence said corresponding author Jaimie L.