1. Is the processing of meat associated with cancer? A large amount of epidemiologic information suggests that high consumption of processed meats can increase the risk of colorectal and gastric cancer, which may be partly due to the addition of nitrites. Intake of processed meats should be minimized, and smoked or cured preserved meat products should be avoided. Some studies suggest that frying, inter- or grilling meat at high temperatures can produce chemicals (polycyclic aromatic hydrocarbons or heterocyclic aromatic amines) that increase cancer risk. 2.Can a low-fat diet reduce cancer risk? Animal studies have found that a high-quality diet can lead to the development of many cancers, but the overall evidence does not support a correlation between fat intake and cancer risk. 3.Do turmeric and other flavorings reduce cancer risk? Studies evaluating turmeric for tumor suppression are ongoing, and some studies have shown potential anticancer effects of capsaicin (red pepper), cumin, and curry. Studies of long-term effects on humans are lacking. 4. Does sugar increase cancer risk? Large intake can indirectly increase cancer risk by promoting obesity. 5.Can eating fish prevent cancer? Animal studies have shown that fish-rich omega-3 fatty acids can inhibit tumor formation or impede tumor progression, but there is limited evidence of benefit in humans. It is recommended to consume different types of fish to reduce the possibility of exposure to too many harmful substances. 6. Is organic food more effective in reducing cancer risk? No studies have shown that organic foods are more effective than foods grown by other farming methods in reducing cancer risk or other health benefits. 7. Can garlic prevent cancer? There is little evidence on the cancer prevention of onion plant components. 8.Does olive oil affect cancer risk? Olive oil is associated with a reduced risk of cardiovascular disease, but not with an increased risk of cancer, and its role in cancer risk is likely to be neutral. 9. Can vegetables and fruits prevent cancer? Intake of vegetables and fruits may reduce the occurrence of cancers including lung, oral cavity, pharynx, esophagus, stomach and colon. Microwaving and steaming are the best cooking methods to maintain the nutritional value of vegetables, and vegetables can also be eaten raw (e.g. salads). It is recommended to eat many kinds of vegetables and use different cooking methods. 10. Is genetically modified food safe? There is no evidence to suggest that genetically modified foods on the market or the ingredients in them have an impact on cancer risk, but because of the short time they have been in the food supply, the long-term health effects are unknown. 11. Does a high-salt diet increase cancer risk? There is conclusive evidence that salt-cured foods increase the risk of stomach, nasopharyngeal and laryngeal cancers. The level of salt in cooked or flavored foods does not increase cancer risk. 12. Can irradiated food cause cancer? There is no evidence to suggest that exposure to food contributes to cancer or is detrimental to health. 13. Do soy products reduce cancer risk? Epidemiologic evidence suggests that intake of conventional soy products such as tofu reduces the risk of breast, prostate, or endometrial cancer, but it is not clear whether these observational findings apply to foods containing soy isolates or structural plant proteins derived from soy.