In 2006, the Harvard Men's Health Watch stated that "about 1.4 million Americans will be diagnosed with cancer this year and about 560,000 will die from it disease" (Exercise and Malignancy 5) . Many individuals and families have been battling cancer for many years. There is still no perfect cure for this deadly disease, and there is no telling how long it will take to find one. Although many risk factors for the development of cancer cannot be changed, such as genetics, environmental carcinogens (cancer-causing substances) or a number of hormones, fortunately there are several studies that show that there are ways to reduce some way the risk of cancer. It is not possible to be immune, but by following a nutritional diet and developing a physically active lifestyle, you can greatly reduce your risk of cancer. Many substances or factors cause cancer, but any type of cancer develops in the same way. Normally, the cells that make up the body grow and then divide. Eventually these cells die and new cells are produced. Cancer results from a mutation that has altered the DNA that makes up a cell. These mutations affect some tumor genes present in the body, tumor suppressors and oncogenes. Tumor suppressors tell the cell to slow down cell division, preventing cells from dividing too much. Cancer mutations destroy these genes, causing cells to divide uncontrollably. The mutations also affect an oncogene, which tells the cell when to grow. These mutations keep oncogenes in an “active state,” causing overproduction of cells (Gibbs 60). The body does not need these extra cells and it can become a mass or tumor. Fortunately, not all tumors become cancer. A tumor that is not cancerous is called a be...... middle of paper...... Harvard Men's Health Watch 11.4 (November 2006): 4-6. Student Research Center. Network. September 24, 2011.Belasco, Jessica. “Breast cancer patients see benefits from exercise and nutrition.” St. Anthony's News. San Antonio News, July 9, 2010. Web. September 22, 2011. Gaskell, Karen Jean. “Exercise and Cancer Prevention.” LIVESTRONG.COM. Lance Armstrong Foundation, March 23, 2010. Web. September 25, 2011."What is cancer?" cancer.gov. National Cancer Institute, July 29, 2011. Web. September 25, 2011. Young, Graeme P. “What Do We Know About Diet and Cancer?” Nutridate 19.3 (2008): 1-4. Student Research Center. Network. October 3, 2011.Reynolds, Gretchen. “Physics Education: Does Exercise Reduce Cancer Risk?” Editorial. WELL. The New York Times, August 18, 2009. Web. September 25, 2011."BRCA1 and BRCA2: Cancer Risk and Genetic Testing." cancer.gov. National Cancer Institute, May 29, 2009. Web. October 1. 2011.