Stress
Even though stress is a psychological issue, it may affect our physical health, as well. It does so by altering the way our hormonal system works and triggering immune problems. The immune system is continuously looking for any problem in the body, and that does not only include infections. When our immune cells come across cancer cells and recognize them, they gather up and take them down. Chronic stress may reduce this natural response and make us more susceptible to developing certain forms of cancer.