Core Tip: A study published in a journal sponsored by the National Cancer Institute shows that eating more onions, onions and garlic in the diet can reduce the risk of prostate cancer by half. A study published in a journal sponsored by the National Cancer Institute shows that eating more onions, onions and garlic in the diet can reduce the risk of prostate cancer by half. According to the Associated Press, the study was conducted by the National Cancer Institute, a division of the National Institutes of Health, and the Shanghai Cancer Institute in China, and was conducted on 238 prostate cancer patients and 471 healthy people in Shanghai, the researchers concluded. The results of the study showed that those who consumed one-third of an ounce (9 grams) per day of allium vegetables, including garlic, green onions, shallots, leeks and onions, reduced their risk of developing prostate cancer by 50 percent. Men who consumed one-tenth of an ounce or more of green onions per day reduced their risk of prostate cancer by about 70 percent, while those who consumed the same amount of garlic per day reduced their risk by about 53 percent. The study also showed that consumption of green onion vegetables reduced the risk of prostate cancer independent of the subjects’ body size, other food intake, and total caloric intake. ;