Why is natural vitamin C better than synthetic?

Vitamin C, the chemical name ascorbic acid, has been synthesized in the form of pills for patients who are deficient in vitamin C. But between two sources of vitamin C (natural and synthetic chemistry), which is more valuable?

The tablet has its own disadvantages - it is often oxidized so it is easy to decompose in the body and is also rapidly eliminated through urine (after 12 hours of elimination, 60 -80% is eliminated). Reserve.

There are documents also said that vitamin C tablet if left too long it is easily decomposed into oxalic acid, which is easy to cause urinary tract stones. Therefore, it is recommended that if you have to take vitamin C tablets, you should buy at least one long-term supply. And those vitamin C capsules, if they have been expired, need to be canceled, so do not regret taking them.

What about vitamin C in fresh vegetables? This type is very good: first of all good - we eat vegetables and not take medicine. But the outstanding advantages of vitamin C in fruits and vegetables in complex form with pectin and flavonoids are compounds that both have the effect of stabilizing the activity of vitamin C. In complexes with pectin due to mass The molecule is very high, so vitamin C is excreted in the urine slowly (after eating 12 hours, only 1/7 of the vitamin C is synthesized). On the other hand, due to the presence of flavonoids in fruits and vegetables, vitamin C is stored by the body for a long time, especially in the adrenal glands.

Vitamin C is very popular in the plant world, and is abundant in fresh fruits and vegetables. Normally, vegetables grown in places with adequate light have higher levels of vitamin C. After entering vitamin C food is absorbed mainly in the small intestine, and participate in many important metabolic processes in the body.

So eating a lot of fresh fruits and vegetables cures the lack of vitamin C in a sustainable way. Last year Canadian scientists in one study commented that drinking 1,000mg of vitamin C daily could not prevent stomach cancer. But drinking only 100g of orange juice (about 40mg of vitamin C can avoid the risk of stomach cancer much more effectively than people who do not drink orange juice. Another study indicates eating an orange every day, or drinking 1 cup of orange juice will avoid stress, for reasons mentioned above, vitamin C in fruits and vegetables is a good "medicine".

But please note one thing: vitamin C is easily destroyed. Withered vegetables, it is considered as losing all vitamin C. When cooking boiled vegetables, it should be noted that if cooking is not technically correct - put the vegetables right from the cold water, or cook them for a long time and reheating them will also take away most. Vitamin C. With sweet fruits, you need to eat fresh. In general, all fruits have vitamin C, but especially there are grapefruit, orange, lemon, mandarin, longan, litchi, papaya .

According to recommended diets - abbreviated RDA (Recommended Dietary Allowances) requires vitamin C 60mg / day for both men and women; If pregnant women, nursing mothers need 70 - 90mg daily.

In general, healthy people, who eat well, eat plenty of fresh fruits and vegetables do not worry about lack of vitamin C. Vitamin C deficiency only occurs in people on a diet, with little or no fresh fruit and vegetables for a long time. , or sick people who eat poorly. In these cases, vitamin C pills should be used.

According to Dr. Vu Huong Van

Health of life