Photocatalyst filter said diet to clear the haze harm is not reliable

Fan zhihong, an associate professor of nutrition and food safety at the school of food science at China agricultural university, points out that no amount of food can prevent smog. Food, after all, comes in the mouth and is absorbed in the small intestine; While PM2.5 particles enter the nose and deposit in the lungs, the two paths do not coincide at all.

Even if the polysaccharides in the fungus and the proteins in pig blood can bind to dust particles, they can only bind to those that enter the mouth. Even if eating "runfei" food can improve the ability to remove dust from the respiratory tract by increasing the mucus on the surface of the respiratory tract and promoting the movement of cilia, it is difficult to deal with the ultra-fine particles that are difficult to remove like PM2.5, because they cannot be eliminated by the force of the respiratory tract itself. As for the dust particles in the alveoli, they are even more out of reach.

Professor fan warned that although eating a variety of vegetable grains such as fungus, radish and lily on a regular basis is indeed good for health, it may help to regulate levels of inflammation and improve intestinal flora.

Although food can't completely eliminate the harm of smog, fan zhihong reminds that scientific diet can greatly reduce the negative consequences of smog.

Studies have shown that fine particles like PM2.5, which enter the alveoli and are difficult for the body to remove, can lead to increased levels of inflammation in the body. So, in the diet, we can appropriately eat some foods that are beneficial to reduce the inflammatory response and improve the antioxidant capacity of the body. Considering the impact of air pollution on the risk of lung cancer, respiratory diseases, cardiovascular and cerebrovascular diseases, we can also reduce the possibility of these hazards through diet and living habits.

Fan pointed out that according to the current research evidence, the nutrients that are conducive to reducing haze damage are mainly in the following categories:

1. Foods rich in antioxidants. A variety of polyphenols in fruits and vegetables, carotenoids have antioxidant effects, they can reduce the degree of oxidative stress in the body. If the original eat vegetables and fruits less, so try to eat a catty of vegetables, half a catty of fruit every day. Try to pick the variety with thicker color, because the vegetables and fruits with darker color often have stronger oxidation resistance, such as strawberry, mulberry and so on rich anthocyanin purple red fruit, in the same amount of food below the effect is stronger than peach, pear and so on, yellow peach is stronger than white peach, purple potato is stronger than sweet potato.

2. Foods rich in omega-3 fatty acids. Omega-3 fatty acids have been shown to reduce inflammation. Foreign studies have found that older people who increase their omega-3 fatty acids in polluted environments have better cardiovascular outcomes than those who do not. For people without anemia problems, the ratio of fish to meat can be adjusted to reduce the amount of red meat (especially beef and mutton) that increases inflammation, reduce the consumption of smoked barbecue meat (which is more oxidized and contains carcinogens), and increase the proportion of fish products.

Foods rich in carotene and chlorophyll. Carrots, pumpkin, mango, papaya and other fruits and vegetables are rich in carotene, spinach, amaranth, small rape, kale and other dark green leafy vegetables are rich in chlorophyll and carotene. Chlorophyll helps to reduce the mutagenic effects of certain chemical poisons, while carotene is beneficial to the resistance and repair ability of epithelial tissues (including the digestive tract, respiratory tract, reproductive tract, mucous membrane of the eyes and skin, etc.). If vitamin A is deficient, the body's respiratory mucosa becomes less resistant. According to the recommendation of our country dietary guideline, should eat half jin every day or so dark green leaf vegetable, carrot also appropriate often eat.

Foods rich in vitamins. Preliminary studies have shown that nutrients such as B vitamins, B vitamins, folic acid, vitamin C, and vitamin E can reduce health damage in the case of air pollution, such as asthmatic children suffering from air pollution, and reduce ventilation less after increased intake of VC and VE. Photocatalyst filter said diet to clear the haze harm is not reliable

Fan zhihong, an associate professor of nutrition and food safety at the school of food science at China agricultural university, points out that no amount of food can prevent smog. Food, after all, comes in the mouth and is absorbed in the small intestine; While PM2.5 particles enter the nose and deposit in the lungs, the two paths do not coincide at all.

Even if the polysaccharides in the fungus and the proteins in pig blood can bind to dust particles, they can only bind to those that enter the mouth. Even if eating "runfei" food can improve the ability to remove dust from the respiratory tract by increasing the mucus on the surface of the respiratory tract and promoting the movement of cilia, it is difficult to deal with the ultra-fine particles that are difficult to remove like PM2.5, because they cannot be eliminated by the force of the respiratory tract itself. As for the dust particles in the alveoli, they are even more out of reach.

Professor fan warned that although eating a variety of vegetable grains such as fungus, radish and lily on a regular basis is indeed good for health, it may help to regulate levels of inflammation and improve intestinal flora.

Although food can't completely eliminate the harm of smog, fan zhihong reminds that scientific diet can greatly reduce the negative consequences of smog.

Studies have shown that fine particles like PM2.5, which enter the alveoli and are difficult for the body to remove, can lead to increased levels of inflammation in the body. So, in the diet, we can appropriately eat some foods that are beneficial to reduce the inflammatory response and improve the antioxidant capacity of the body. Considering the impact of air pollution on the risk of lung cancer, respiratory diseases, cardiovascular and cerebrovascular diseases, we can also reduce the possibility of these hazards through diet and living habits.

Fan pointed out that according to the current research evidence, the nutrients that are conducive to reducing haze damage are mainly in the following categories:

1. Foods rich in antioxidants. A variety of polyphenols in fruits and vegetables, carotenoids have antioxidant effects, they can reduce the degree of oxidative stress in the body. If the original eat vegetables and fruits less, so try to eat a catty of vegetables, half a catty of fruit every day. Try to pick the variety with thicker color, because the vegetables and fruits with darker color often have stronger oxidation resistance, such as strawberry, mulberry and so on rich anthocyanin purple red fruit, in the same amount of food below the effect is stronger than peach, pear and so on, yellow peach is stronger than white peach, purple potato is stronger than sweet potato.

2. Foods rich in omega-3 fatty acids. Omega-3 fatty acids have been shown to reduce inflammation. Foreign studies have found that older people who increase their omega-3 fatty acids in polluted environments have better cardiovascular outcomes than those who do not. For people without anemia problems, the ratio of fish to meat can be adjusted to reduce the amount of red meat (especially beef and mutton) that increases inflammation, reduce the consumption of smoked barbecue meat (which is more oxidized and contains carcinogens), and increase the proportion of fish products.

Foods rich in carotene and chlorophyll. Carrots, pumpkin, mango, papaya and other fruits and vegetables are rich in carotene, spinach, amaranth, small rape, kale and other dark green leafy vegetables are rich in chlorophyll and carotene. Chlorophyll helps to reduce the mutagenic effects of certain chemical poisons, while carotene is beneficial to the resistance and repair ability of epithelial tissues (including the digestive tract, respiratory tract, reproductive tract, mucous membrane of the eyes and skin, etc.). If vitamin A is deficient, the body's respiratory mucosa becomes less resistant. According to the recommendation of our country dietary guideline, should eat half jin every day or so dark green leaf vegetable, carrot also appropriate often eat.

Foods rich in vitamins. Preliminary studies have shown that nutrients such as B vitamins, B vitamins, folic acid, vitamin C, and vitamin E can reduce health damage in the case of air pollution, such as asthmatic children suffering from air pollution, and reduce ventilation less after increased intake of VC and VE.