Can vitamin C prevent colds?

　　Can Vitamin C prevent? cold

　　Research progress of foreign experts

　　Recently, Australian and Finnish scientists conducted an academic review study and found that for ordinary people, taking vitamin C does not prevent colds. Three PhDs from the University of Helsinki in Finland and their research team jointly conducted this research. Researchers analyzed 23 experiments with the general public and found that those who took vitamin C were no less likely to catch a cold than those who took a placebo. At the same time, they also noticed that adults who took vitamin C recovered faster after catching a cold, but there was no difference in children.

　　Domestic medical experts’ opinions

　　Shanghai Second Medical University Ruijin Hospital Pediatrics Professor Yu Shanchang believes that large doses of vitamin C can enhance the ability of white blood cells in the blood to phagocytose bacteria and fight viruses, and shorten the course of colds. Professor Yu also reminded that only large doses of vitamin C can enhance immunity, while small doses of vitamin C (60 mg-100 mg) can only meet daily intake needs and cannot prevent or treat colds. Patients whose body temperature exceeds 38.5 degrees Celsius can use some antipyretics appropriately, but it is best to use them under the guidance of a doctor.

　　Editor’s reminder: Foods to avoid when eating vitamin C

　　●Pork liver + vitamin C is easily oxidized and destroyed when encountering trace amounts of metal ions, especially copper ions. Pork liver is a food extremely rich in copper, with about 2.6 mg of copper per 100 grams of pork liver. If consumed at the same time as vitamin C, the copper in pig liver can cause vitamin C to lose its original biological function. Similarly, sheep liver and beef liver cannot be eaten together.

　　●Milk + vitamin C has a certain acidity and strong reducing properties, and is easily oxidized. Milk is rich in vitamin B2, which has certain oxidizing properties. If taken at the same time, vitamin C will be easily oxidized by vitamin B2, and vitamin B2 will be reduced. Both will lose their effectiveness at the same time, and the purpose of supplementing vitamins will not be achieved.

　　●Shellfish and aquatic products Shellfish and aquatic products contain a large amount of arsenic compounds, but since these arsenic compounds exist in the pentavalent form, they will not have any impact on the human body. However, if you take a large amount of vitamin C while eating aquatic products with high arsenic content, 5-valent arsenic can be converted into 3-valent arsenic. Trivalent arsenic is arsenic and may cause poisoning after taking it. Therefore, do not take large amounts of vitamin C when eating aquatic products.

　　Tips to prevent colds

　　Step one: Do asana breathing when you feel cold. When going out for activities, sometimes the weather suddenly changes and the clothes you wear are not enough to keep out the cold. At this time, you cannot tighten your body together, because the tighter you are, the easier it is for the cold air to invade. Instead, you should immediately do physical breathing. The method is to raise your hands to the front of your abdomen and take a deep breath. When inhaling, imagine that your limbs are breathing in, and slightly expand your arms outwards. This can enhance your ability to withstand the cold and prevent you from feeling cold.

　　Step 2: Rub the back of your neck when your body is cold. If the cold air has invaded the body and you feel cold all over, rub the hairline at the back of your neck vigorously with your palms, 100 times with each hand, and you will usually start to sweat, and you can avoid catching a cold if you sweat.

　　Step 3: Rub green onions, ginger and salt on colds. If you already feel like you have a cold, such as sticky saliva and feeling uneasy all over, before going to bed that night, mash 20 grams each of green onion and ginger, and 3 grams of salt powder. Wrap it with gauze and rub it on the chest, back, palms, ribs, elbows, and soles of the feet in order, and then cover yourself with quilt. sleep , if you sweat a little at night, you will be fine when you get up early the next day. But pay attention to cold protection within two days to avoid recurrence.