Excessive use of vitamins is harmful to health.

Although vitamins are essential nutrients for human body, excessive use or abuse of vitamins is harmful to human body. Therefore, vitamins should be used under the guidance of doctors according to the needs of health and disease treatment.

When the intake of vitamin A exceeds 654.38+ 10,000 units at a time, it will lead to acute poisoning, with symptoms such as headache, lethargy, delirium, loss of appetite, nausea, vomiting, diarrhea and peeling. Infants will have symptoms such as fever, sweating, convulsions, vomiting, and increased intracranial pressure leading to hydrocephalus and pseudotumor. If taken in excess for a long time, it will cause chronic poisoning, unstable gait, pain when pressing ulna or tibia, etc. Children will have early epiphyseal closure, sparse hair, exophthalmos, headache, insomnia, emaciation, anemia and other symptoms; Excessive use of vitamin A by pregnant women can also lead to fetal malformation.

Excessive use of vitamin C can cause diarrhea, rash and hyperacidity. Oxalate is formed in the human body, which causes kidney calculi (if it is used with calcium tablets for a long time, it is more likely to cause stones); Too fast intravenous injection of vitamin C can cause temporary syncope or dizziness, while high-dose intravenous injection of vitamin C can lead to thrombosis and sudden death. Too much vitamin C can also destroy vitamin B 12 in the body.

Vitamin D If you take more than 65,438+00 ~ 65,438+05 million units of vitamin D every day, you will have poisoning symptoms such as not thinking about eating, nausea, vomiting, dry mouth, constipation or diarrhea, polyuria, and pain when bones are compressed. Excessive use of vitamin D by pregnant women can cause symptoms such as high blood calcium, narrow renal and pulmonary arterioles, high blood pressure, and mental retardation after birth.

Vitamin E The daily dose of vitamin E for ordinary adults is 1~3 times, each time 10~ 100 mg. If you take too much in the early stage, your immune function will decline, some people will have dizziness, blurred vision, angular stomatitis and other symptoms, and women may also have amenorrhea; Excessive use in the later stage may lead to hormone metabolism disorder, muscle weakness, female breast hypertrophy and even breast cancer. People with hypertension, coronary heart disease, thyroid dysfunction, diabetes, hypercholesterolemia and abnormal liver function, taking too much vitamin E can easily cause platelet aggregation and thrombosis.

Generally speaking, it is safe for normal healthy people to take the above vitamins from their daily diet. For example, besides balancing three meals a day, we should also pay attention to eating some fruits and nuts in moderation. In addition, it is best to get into the habit of regular outdoor exercise, bask in the sun every day, breathe fresh air and stay healthy and strong.

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