According to Dr. T. Colin Campbell, “No chemical carcinogen is as important in causing human cancer as animal proteins.” There are nine categories of vegetarianism that include many different diets such as vegan, raw food, and macrobiotic diets (ProQuest). The different categories of vegetarianism you can choose from depend on your body type and lifestyle (Preyss Pro). Not being a vegetarian can lead to obesity, disease and harm to animals. These problems can be solved by serving more vegetarian foods in public places. While vegetarians live healthy lives, meat eaters increase the risk of becoming obese. David Graham interviewed Kathy Rayner, who says: “Good health is not a coincidence, it's a choice. You have to be intentional about it.” Daniel Hoy says vegetarians are leaner and have a lower body mass index than meat eaters, which decreases the risk of chronic disease and increases lifespan in humans. “Being aware and educated about food and the impact it has on your body is what constitutes a healthy diet” -Lauren Burns (Hoy). Vegetarian men have an average lifespan of eighty-three years, which is nine and a half times longer than the average man. Vegetarian women have an average lifespan of eighty-five years, which is six times longer than average (Graham). Heather Moore says vegetarians are nine times less likely to be obese and 40% less likely to get cancer. One third of the most common types of cancer are linked to obesity and laziness (Moore). Of course, being obese increases your chances of developing diseases. Vegetarians are thought to have low levels of iron, which increases the risk of infection and reduces immunity to things that are unhealthy for you, and they h...... middle of paper ..... .8 Dec 2012: LI SIRS Issues Researcher. Network. 04 February 2014. Hi, Daniel. "No meat for me." Herald Sun (Melbourne). 19 September 2011: 37. SIRS Issues Researcher. Network. February 04, 2014.Johnson, Avery. "Green is good for you: vegetarians live longer, according to a study." Wall Street Journal. 04 June 2013: D.3. SIRS Problem Researcher. Network. February 04, 2014.Moore, Heather. “Eat Vegan to Beat Breast Cancer: Doctor's Orders.” Californian Salinas. 10 October 2012: np SIRS Issues Researcher. Network. February 04, 2014.Preyss, Jennifer. "Cons: Meat is necessary in the diet." Lawyer Victoria. 12 March 2012: np SIRS Issues Researcher. Network. February 04, 2014.Preyss, Jennifer. “Pro: Plant-based diet offers a healthy option.” Lawyer Victoria. 12 March 2012: np SIRS Issues Researcher. Network. February 13, 2014.ProQuest Staff. “At issue: vegetarianism.” ProQuest LLC. 2014: page n. SIRS Problem Researcher. Network. 04 February. 2014.