Vitamin supplementation must be carried out according to the actual situation of the body. For example, vitamin C deficiency, just add vitamin C.. Don't take multivitamins for convenience, because eating some vitamins that you don't lack will have a negative impact on your body, and eating too much will do harm to your body! For example, you are not short of vitamin A, but you are not short of vitamin C, but after taking multivitamins, you may feel nothing. After all, I usually take vitamin C Yinqiao tablets at any time when I have a cold and fever, but do you know? Vitamin C can not only enhance human immunity, but also provide nutrients for virus growth, which is not worth the loss. At the same time, it will make the skin red and increase abdominal cramps and diarrhea caused by intestinal peristalsis. Daily dosage of more than 0.6 grams will lead to frequent urination. Taking vitamin C4 ~ 12g orally every day can precipitate urate in urethra and form stones. If children take large doses of vitamin C for a long time, it may affect bone development. In addition, taking a large dose of vitamin C will also reduce the fertility of some women, and affect the development of the fetus, and even lead to congenital scurvy. Once people who take too much vitamin C for a long time stop taking it, they still maintain a high decomposition rate and high excretion rate of vitamin C, so that when the vitamin C content in food is sufficient, there will be symptoms of vitamin C deficiency.

The following are the hazards of excessive supplementation of other vitamins for your reference:

Excessive vitamin A: Beware of poisoning.

Vitamin A can promote the growth of epithelial tissues such as skin, conjunctiva and cornea, maintain normal functions, and enhance the photosensitivity of retina, which is often said to improve vision, but excessive intake (500,000 to 500,000 U per day for adults for several months) can also lead to poisoning. Acute poisoning is often manifested as oral ulcer, gingival bleeding, abnormal excitement, dizziness, lethargy, headache, vomiting, diarrhea and other symptoms. Chronic poisoning is characterized by loss of appetite, headache, fever, abdominal pain, itchy skin, irritability and alopecia.

Vitamin d overdose: growth stagnation

Vitamin D can promote the absorption of calcium in human intestine. When vitamin D is insufficient, the absorption rate of calcium will decrease. Generally speaking, through ultraviolet irradiation, vitamin D can be automatically synthesized in the human body and stored for a long time, and normal adults generally do not need to supplement vitamin D. Vitamin D is very effective in the prevention and treatment of rickets in children, but excessive or large doses in a short period of time can also lead to serious poisoning reactions, and the dosage of poisoning varies significantly among individuals. Some children will experience growth stagnation after taking vitamin D 1800 units for a long time. Adults who take it in large quantities for a long time can cause general fatigue, loss of appetite, vomiting, diarrhea and other symptoms.

Excessive vitamin e: blurred vision

Vitamin E is an antioxidant, which is considered to have the functions of preventing cardiovascular and cerebrovascular diseases and anti-aging, and is widely used. However, if taken for a long time, the daily dose reaches 400 mg to 800 mg, which can cause blurred vision, breast enlargement, flu-like syndrome, headache, dizziness, nausea, stomach cramps and so on. Taking more than 800 mg for a long time every day will change endocrine metabolism and immune response, reduce sexual function, and may cause thrombophlebitis or embolism.

Excessive Vitamin B6: Drug Dependence

Vitamin B is a very important water-soluble vitamin. It has been reported that taking 200 mg of vitamin B6 every day will lead to drug dependence, and taking 2 ~ 6 g every day will lead to unstable gait, numbness and inflexibility of hands and feet after several months.

To sum up, pay attention to a balanced diet and nutrition in daily life, correct the habit of being picky about food, ensure adequate intake of vegetables, fruits, meat, eggs and other nutrients every day, achieve a comprehensive and balanced diet, and avoid adding extra vitamins. People who really need to supplement vitamins and trace elements should prescribe the right medicine and be safe and nutritious under the guidance of doctors.