2. The increase of nitrite content in cancerous leftovers will gradually increase with the increase of storage date. Nitrite is a strong carcinogen. Regular consumption of leftovers will increase the risk of digestive system tumors such as gastric cancer, esophageal cancer and liver cancer.
3. The daily meal preparation of obese families often exceeds the actual needs to avoid wasting and swallowing, which leads to overeating. ? If the energy intake exceeds the actual needs of the human body for a long time, it will lead to obesity over time. ? Obese people are prone to hypertension, hyperlipoproteinemia, coronary heart disease, diabetes, gallstones, cancer and other diseases. Affect people's quality of life and shorten life span.
? 4. After the malnourished leftovers are repeatedly heated or brewed with boiling water, water-soluble vitamins such as vitamin C and vitamin B almost disappear, and most minerals are lost. If you eat this kind of food regularly, you are prone to physical deterioration and malnutrition. ? Old people, children or patients, especially gastrointestinal patients, eating leftovers is like adding insult to injury and harmful to health? After storage for a period of time, the color, aroma and taste of leftovers with decreased appetite can not maintain the original level. In addition, food will be put back into the pot at high temperature, which may make the food unrecognizable and become a hodgepodge of soft, rotten and dim food with bad taste. Eating this kind of food often will reduce appetite and lose the pleasure of eating.