Uncle Zhang, you have been feeling weak in your legs and feet recently, and your mental state is also insufficient. Buy a box of vitamin C to eatLast time you asked me to buy something that I haven't finished yet, stop talkingUncle Zhang, who was buying medicine, was stopped by the salesperson at the pharmacy again

Uncle Zhang, you have been feeling weak in your legs and feet recently, and your mental state is also insufficient. Buy a box of vitamin C to eat

Last time you asked me to buy something that I haven't finished yet, stop talking

Uncle Zhang, who was buying medicine, was stopped by the salesperson at the pharmacy again. The shop assistant said that taking an appropriate vitamin C tablet can help alleviate Mr. Zhang's mental state. Therefore, he hopes that in addition to buying a medicine for lower back and leg pain, Mr. Zhang can also receive a box of vitamin C.

Who would have thought that Uncle Zhang had not finished the vitamin C he bought last time.

Eating vitamin C for colds, insomnia, and exhaustion

Regardless of the disease, pharmacy salespeople always ask middle-aged and elderly people to take a vitamin C tablet together, so taking one vitamin C tablet every day has almost become a must-have item for many middle-aged and elderly people.

But is it really good to take a vitamin C tablet every day? How much does consuming vitamin C lead to excessive consumption? What symptoms does the body show that vitamin C is excessive?

Why do pharmacies always sell you vitamin C?

Not only Uncle Zhang, but also many people who go to pharmacies to buy medicine have encountered salespeople promoting vitamin C. So why is this happening?

The first point is that vitamin C has many functions

The most well-known function of vitamin C is as a reducing agent, which can have antioxidant effects. When it comes to oxidation, we think of a word,Free radicals The process of oxidation reaction can lead to the production of free radicals, and many diseases are related to free radicals.

Vitamin C not only has antioxidant propertiesIt can also resist free radicals,Reduce the damage of free radicals to the bodySo supplementing vitamin C can prevent the occurrence of many diseases as a whole.

secondly,Vitamin C also plays a very important role in the immune system.

It can help synthesize antibodies, enhance the activity of white blood cells, enhance the ability to clear bacteria, and thus enhance immunity. In 2020, it was reported that vitamin C supplementation could reduce the mortality of patients with severe COVID-19. [1]

also,Appropriate supplementation of vitamin C can also promote cholesterol metabolismOr it can help regulate blood lipids and blood pressure.

Vitamin C is an essential coenzyme in the process of cholesterol metabolism. When vitamin C is sufficient, cholesterol is converted into bile acids and then metabolized. If vitamin C is insufficient, the metabolism of cholesterol is affected, which may lead to hyperlipidemia or cholesterol deposition forming arteriosclerosis, causing an increase in blood pressure.

But the reason why pharmacies recommend vitamins to you is not because vitamin C is good, but because of these two reasons.

Secondly, there are fewer adverse reactions to vitamin C

Vitamin C, as a very common vitamin in nature, can be seen in various fruits and vegetables, such as tomatoes, oranges, cucumbers, and so on.

It is inherently less dangerous and rarely reacts with other drugs, so most people can eat it and there are few adverse reactions when taken normally.

Thirdly, the issue of returns

The fact that there are multiple therapeutic effects and fewer adverse reactions is not the key reason for promoting vitamin C. The real reason for recommending vitamin C to you is that pharmacies can profit from it.

There are many types of vitamin C on the market, some for a few yuan, some for a few hundred yuan, but in fact, the main ingredients are the same. The difference is thatSome are expensive, while others are cheap; Some are drugs that supplement vitamin C, while others are just health products that supplement vitamin C

And what the salesperson recommends is usually slightly more expensiveVitamin C health productsThe main ingredients are similar to a few yuan per bottle of vitamin C medication, but the taste and color make people want to eat more.

So, if we really want to take vitamin C to prevent diseases and enhance resistance, we should not blindly believe the recommendations of the store staff.

So the question arises again, there are many benefits to eating vitamin C, and it's cheaper to buy it yourself. How much vitamin C is suitable to eat every day?

How much vitamin C do you need per day?

The "Dietary Guidelines for Chinese Residents (2022)" recommend a daily intake of 100mg of vitamin C. However, this may only be a minimum requirement if one wants to supplementVitamin C enhances immunity and regulates cholesterol levelsThe daily supplement should be higher than 100mg, but it is best not to exceed 600mg.

Although the adverse reactions to vitamin C are minimal, based on current cases, there have been no deaths worldwide due to excessive use of vitamin C. But if taken excessively, it can still have many effects on the body.

If every dayIntake 1000mgVitamin C lasts for more than 2-3 months. Although there is no discomfort in the body at this time, in order to prevent excessive concentration of vitamin C in the body, our metabolism of vitamin C will accelerate.

At this point, if the patient stops taking vitamin C, they may even show symptoms of vitamin C deficiency, such asGum bleeding, nasal bleeding, limb swelling and painwait.

If every dayVitamin C exceeds 3000mg, which may increase the risk of hyperuricemia, gout, frequent urination, urgency, and even hematuria; If it exceeds 5000mg, it may lead to the occurrence of stones.

So in order to safely consume, the intake of vitamin C is crucial.

So let's take a look at the next question, when should we eat less vitamin C? What are the symptoms of excessive intake of vitamin C in the body?

Three symptoms, maybe we should eat less vitamin C

The content of vitamin C tablets on the market is inconsistent, some contain vitamin C100mg in one tablet, some contain vitamin C400mg in one tablet, and some even have 1000mg in one tablet. Therefore, some vitamin C tablets are okay to take two tablets, while others may seriously exceed the standard. If one does not pay attention to the content of vitamin C and blindly takes it, there may be an issue of excessive vitamin C.

The first point is allergic reactions.

Natural vitamin C rarely causes allergic symptoms, but there are also very few patients who develop rashes after taking vitamin C tablets, which is also an allergic phenomenon. However, severe allergies can trigger life-threatening effects. Therefore, although there are few people who are allergic to vitamins, if symptoms such as redness and itching occur after taking them, it is advisable to consume as little vitamin C.

The second point is the withdrawal reaction mentioned earlier.

Vitamin C is beneficial for many organs, which also means that if the body's vitamin C is too high, it will affect the normal functioning of the organs. In order to maintain the homeostasis of the internal environment and ensure the normal concentration of vitamin C, our body will accelerate the metabolism of vitamin C.

At this point, if vitamin C is suddenly stopped, but the metabolic rate in the body is still very fast, it may lead to a lack of vitamin C and related diseases.

So, if you feel like you have consumed too much vitamin C, if you want to regulate it, don't suddenly stop taking medication. You should make gradual changes and let the body gradually adapt, which may be better.

The third point is a decrease in immunity.

Some people may have questions, isn't it that vitamin C enhances immunity? Why does excessive consumption reduce immunity?

What determines immunity is the body's immune cells. The more immune cells there are within a certain range, the faster the immune response to viruses and bacteria invasion, which can be said to be the stronger the immunity.

However, a large amount of vitamin C enters the bloodstream and surrounds white blood cells, which may lead to the death of white blood cells or a decrease in their ability to engulf bacteria and necrotic cells, leading to symptoms of decreased immunity.

The doctor has something to say

In summary, there are many benefits of vitamin C, but it should not be consumed every day. If consumed excessively, there should be a certain amount in everything.

If we can meet the demand for vitamin C in our daily food, we should not deliberately supplement it. For middle-aged and elderly people, if they want to supplement, they can also choose vitamin C tablets, but try to choose tablets with higher cost-effectiveness.

That's all for today's science popularization. Do you often take vitamin C and do you have any symptoms of excessive vitamin C?

[1] Scientists found that vitamin C can improve the condition of COVID-19 severe patients. Xinhua News Agency, December 10, 2020

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