As a vitamin that is very popular among the public, vitamin C spreads its functions to prevent the cold, whiten the skin, enhance the resistance, and exaggerate it. It can also prevent cancer and prevent cardiovascular disease. .
Legend is the legend, there is only one truth. Chen Ting, Pharmacist, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, to restore a real vitamin C.
Vitamin C is a water-soluble vitamin widely found in fresh vegetables and fruits. The human body cannot synthesize vitamin C by itself. It must rely on food or medicine. Therefore, in the 18th century, most of the explorers who lacked vitamin C for a long time experienced it. Torment of vitamin C deficiency, even threatening life.
Lack of vitamin C, there will be symptoms of lethargy, fatigue, bleeding gums, easy infection and difficult to heal. Vitamin C plays an important role in the removal of heavy metals such as lead, arsenic and cadmium, so it must be taken in moderation every day.
Extra large doses can cause bloating, rash, hyperacidity, urinary calculi, severe hemolysis, and even fatality.
Can vitamin C prevent disease?
Prevention of tumor
Chen Ting gave a study, according to a 2009 JAMA report, in a randomized controlled trial of nearly 15,000 male subjects over the age of 50, randomly divided into two groups, one group taking 500 mg of vitamin C per day, Another group took a placebo. After 8 years of follow-up, it was found that vitamin C had no effect on the incidence of cancer.
Prevent cardiovascular disease?
In an observational study of 43,788 men, the results showed no association between vitamin C supplementation (700 mg or more per day) and risk of stroke.
Randomized trials have also shown that vitamin C does not benefit primary or secondary prevention of coronary heart disease.
The myth of vitamin C has been shattered, and people have to doubt the legendary prevention of colds.
Fortunately, vitamin C does have some preventive effects on the common cold, especially for people who are involved in high-intensity physical activity in extremely cold climates.
Clinical studies have found that vitamin C can shorten the duration of adult cold symptoms by 8%, and the duration of children with cold symptoms is reduced by 14%.
Finally, we can draw the conclusion that:
Must take vitamin C daily according to a certain dose;
Excessive intake of vitamin C can cause poisoning;
Vitamin C has a preventive effect on the common cold.
