The human body constantly produces a substance called free radical, which will damage the cells in the body, destroy the immune system and bring problems to people's health. Of course, we can also produce antioxidants in the body, which can eliminate harmful free radicals. However, as we get older, there are fewer and fewer antioxidants in our bodies, and eventually we can't eliminate those accumulated free radicals. When the human body is flooded with free radicals, health will turn red.
We can supplement the reduction of natural antioxidants by ingesting foreign antioxidants. Some foods contain natural antioxidants, such as potatoes, green tea, oranges, broccoli, milk, fish, wheat, cherries, strawberries, watermelons and tomatoes. Are cheap and good natural antioxidant foods. Selenium and zinc also have the function of scavenging free radicals, so the elderly should pay attention to the intake of seafood and meat rich in zinc and selenium.
2. Nutritional diet: A nutritious diet must first ensure high-quality protein, and often eat eggs, milk and bean products. High-quality protein mainly includes animal food and bean products. Animal food should increase the intake of fish. Eggs are the ideal source of protein, and should be one every day. The utilization rate of protein in milk is high, and 250 ml should be drunk every day. Skim milk can be used for patients with high cholesterol. Choose bean products such as bean curd, dried bean curd and vegetarian chicken to supplement high-quality protein without increasing blood lipid.
Secondly, eat more fresh green leafy vegetables and fruits, because vegetables and fruits are rich in trace elements, vitamins and dietary fiber, which can provide rich vitamins such as vitamin C and β -carotene and play an important role in maintaining normal physiological functions of the body, while dietary fiber can increase gastrointestinal peristalsis of the elderly and prevent constipation.
In addition, we must ensure the intake of various inorganic salts and trace elements. Calcium, iron, selenium and chromium are all important trace elements for the elderly. Milk and dairy products are good sources of calcium. Foods with high chromium content include meat, beans and seafood.
3. Receive a small amount of germs on a regular basis: Receiving a small amount of germs on a regular basis is a good way to prevent diseases. Some people start using antibiotics when they have a slight sore throat, runny nose and cough, and their immune system will not be exercised, which will lead to the body's tolerance to antibiotics in the long run. When the infection is not very serious, try not to use antibiotics, but exercise your immune system by your own resistance. The next time you meet the same "enemy", the trained immune cells will produce very targeted immunity, thus protecting your health.
4. Mental health: Positive optimism Nerve fibers are distributed in various tissues of the human immune system, such as thymus, spleen, lymph glands, bone marrow, etc. All nerves are under the command of the brain. Brain activity directly affects the function of the immune system. A positive and optimistic mental state helps to increase the number of immune cells, stimulate the vitality of the immune system, and thus fully protect the body, while the immune system of negative pessimists is mostly slow to respond and has low function. As an elderly person, we should first pay attention to maintaining mental health, which helps to enhance our immunity.
5. Keep proper physical exercise and outdoor activities: Modern people generally live in tall buildings, with heating in winter and air conditioning in summer, so they have less opportunities to get in touch with nature. Oxygen and ultraviolet rays are extremely important factors in human physiological metabolism. Long-term hypoxia of cells is inevitable. Proper exercise can improve the function of central nervous system, heart nutrition and lipid metabolism, promote systemic blood and body fluid circulation, promote metabolism, delay the aging of body tissues, and correspondingly delay the process of immune system function attenuation.
6. Live a regular life and ensure adequate sleep: daily life behaviors such as food, clothing, housing and transportation will affect your health. Bad behavior habits can be the inducement of a series of diseases, including cancer. Negative life factors continue to act on the body for a long time. If the immune system is over-stimulated, it will disturb its normal physiological process, directly destroy and reduce its function, lead to decreased immunity and cause many diseases. Therefore, the elderly should develop good living habits, live regularly, combine work and rest, have a balanced diet, get rid of bad living habits, and ensure that the immune system is in a good state of operation.