1. Collagen is rich in amino acids needed by human body, including glycine, proline and hydroxyproline. Collagen is the most important component of extracellular matrix and the most abundant protein in human body, accounting for more than 30% of the total protein. When foreign bacteria and viruses invade human body, immunoglobulin will combine with collagen, and human immunity can be greatly enhanced.
2. Vitamins can enhance human immunity. In particular, VC is very important to human body, which reduces the permeability of capillaries and is a barrier for human body to prevent virus invasion and protect body organs. Healthy people had better eat raw fruits and vegetables to absorb vitamins, because VC will be lost during heating. Fruits and vegetables rich in VC in summer mainly include tomatoes, watermelons, cauliflower, green peppers and various green leafy vegetables. Strawberry, citrus, kiwi fruit, grapes and other vitamin C content is also very rich.
3. Edible fungi mainly include Lentinus edodes, Lentinus edodes, Hericium erinaceus, Volvariella volvacea, Auricularia auricula, Tremella, Lily and Ganoderma lucidum. All of them have obvious effects on enhancing immunity. In particular, Ganoderma lucidum contains anticancer components and is rich in germanium, which can accelerate the body's metabolism and delay cell aging.
4. Foods with high zinc content are mainly seafood, lean meat, coarse grains and beans. Zinc is an indispensable trace element in human body, and many enzymes in human body can only play a role with the participation of zinc, which is very important for regulating immune function.