Nucleic acid (1) is a kind of polymer compound, which is the core substance that dominates life activities. It is not only the basis of protein synthesis, but also provides genetic information, which plays a key role in human growth, development, reproduction, heredity and other major life activities. Lack of this substance will accelerate aging and disease. American medical scientist Davis said: "As long as people eat more foods rich in nucleic acids, they can keep you young and live longer. Nucleic acid is an important substance related to human health, vitality and youth. " Foods rich in nucleic acids include beef, horse meat, animal liver, heart and kidney, sardines, salmon, shrimp, clams, oysters, poultry, lentils, spinach, mushrooms, oats, onions, asparagus, nuts, wheat germ, radishes and beets. Experts suggest eating seafood once a week, animal liver once, beef and beans once or twice; Eat bamboo shoots, carrots, onions, oats, spinach, cabbage and so on. Drinking 5 cups of tea or juice every day can ensure the supply of nucleic acid.
(2) Antioxidants: It is reported that there are many signs that antioxidants, especially vitamin E, can prevent free radicals from damaging blood vessel walls, thus preventing cholesterol blockage, thus helping to fight heart disease and sudden death. Almost all coarse grains (especially malt), nuts and vegetable oils contain vitamin E, and vegetables and fruits are also rich in antioxidants, especially citrus, dark green vegetables and orange fruits and vegetables, which have anti-aging and anti-cancer effects if eaten frequently.
(3) Vitamin B: Vitamin B6 and folic acid are difficult to obtain B vitamins, which help to decompose excessive cysteine, which is an amino acid and a risk factor for heart disease. Vitamin B6 exists in chickens, fish, coarse grains and beans. Folic acid is rich in green leafy vegetables, orange juice, legumes and fortified grains. Vitamin B6 is very important in fat metabolism. Other vitamins are generally not easy to lack.
(4) Enzymes: Digestibility declines after middle age, because the secretion of various digestive enzymes such as amylase, protease and lipase decreases. Catalase, glutathione oxidase and superoxide dismutase (SOD) can effectively eliminate the free radicals produced in metabolism. Free radicals can destroy the structure of human cells, inactivate protein, ribonucleic acid (DNA) and deoxyribonucleic acid (RNA) which have vital activities in cells, and induce cardiovascular diseases, dementia, cancer, cataracts and arthritis. Foods rich in enzymes include mushrooms, yam, ginger, beans, leeks, garlic, green peppers, eggplant, ginkgo, Gynostemma pentaphyllum, medical stone, radish, pumpkin, papaya, lettuce, pineapple, hawthorn, royal jelly, jujube and so on. Enzymes are not heat-tolerant, so it is best to eat them raw as soon as possible.
(5) Zinc: Zinc, a mineral element, is an active component of systemic enzymes. According to statistics, more than 200 kinds of enzymes in the human body and neurotransmitters, the chemical signal transmission system in the brain, are inseparable from zinc. Because zinc, like copper, is concentrated in the hippocampus of the brain, it plays an important role in maintaining cell integrity, cell proliferation, gene regulation, nucleic acid metabolism and immune function. But men tend to ignore zinc. The latest dietary survey shows that less than 1/3 of men meet the requirements of zinc. Foods rich in zinc include seafood (oysters, shellfish, marine fish), lean meat, coarse grains and leguminous plants. Regular zinc supplementation also helps to maintain vigorous sexual function.