The normal physiological functions in the human body require vitamins to maintain. Vitamins are trace organic matter. Although they play a role in growth, metabolism and development in the human body, they do not participate in the composition of human cells and cannot provide energy.
There are many types of this substance, including five most important ones: A, B, C, D, and D E. The effects of these five vitamins are different. Let me introduce them in detail below.
1. Vitamin A
Vitamin A can promote growth and reproduction, maintain normal secretion of vision and mucosal epithelium, and can also prevent precancerous lesions. If this vitamin is lacking, the patient will grow slowly, his vision will decrease and his night blindness will occur.
Therefore, it is recommended to consume vitamin A moderately in daily life to maintain normal functions of the body. However, when supplementing, you should not overdose. Generally, adults should not exceed three milligrams per day, and children should not exceed two milligrams, to avoid the low discharge ratio, which may cause excessive vitamin A, resulting in symptoms such as headache, nausea, hydrocephalus, , vomiting, etc.
2. Vitamin B
There are many types of vitamin B. The main function is to help fat, sugar, protein and other protein metabolize and release energy; relieve alcohol and toxic substances such as nicotine and protect the liver; maintain the normality of nervous system , and relieve headaches or migraine .
At the same time, it helps prevent blood vessel blockage and protects cardiovascular health. Because this type of vitamin can be divided into different types, the amount of intake varies from type to type. However, any type of food, excessive intake may lead to drug dependence, and symptoms such as numbness in the hands and feet, and incoordination of the limbs.
3. Vitamin C can promote the formation of antibodies and tetrahydrofolate , the absorption of iron, and maintain the activity of thiotazyme, and alleviate the toxicity of heavy metals such as lead and mercury to the body. At the same time, it can also remove free radical , block the formation of carcinogenic compounds, and prevent cancer.
However, when you consume too much of this vitamin, side effects such as polyuria and rash will occur, and lead to oxalic acid, uric acid stones, and bone diseases. In severe cases, a large number of red blood cells may also cause dangerous phenomena such as hemolysis. Therefore, it is recommended to consume vitamin C rationally every day to avoid excessive vitamin C, which will cause great damage to the body.
4. Vitamin D
Vitamin D can regulate the metabolism of calcium, phosphorus and other substances, promote bone growth, regulate cell growth and immune function. Generally, the recommended dose of this vitamin per person is 0~400IU per day. For older people who have osteoporosis , it is generally recommended to have an amount of more than 400 or less than 800IU.
When too much of this substance is consumed, it may cause acute poisoning and excessive vitamin D. Among them, hypervitrogenic diseases are more common in infants and young children, and are mainly manifested as weakness, heart rate disorder, vomiting, constipation, polyuria, nausea, and decreased appetite. In addition, excessive intake for a long time may also cause hypercalcemia , leading to arteriosclerosis, impaired renal function, and extensive calcification of soft tissue, which can cause death in severe cases.
5. Vitamin E
Vitamin E can delay aging and reduce the production of wrinkles; improve lipid metabolism and prevent arteriosclerosis; strengthen the hepatic cell membrane and protect the cells in alveolar ; reduce the chance of respiratory infection; and promote the secretion of sex hormones.
At the same time, it can also prevent cancer and inhibit tumor growth. However, when consumed too much, it will cause headaches, nausea, blurred vision, excessive menstrual periods, and even amenorrhea. In severe cases, you will suffer from diabetes , hypertension and other diseases, and cause renal dysfunction.
The above are the effects of 5 common vitamins and the adverse reactions that may occur when taking overdose. After understanding the effects and adverse reactions of these vitamins, you need to take vitamins reasonably to avoid excessive intake and cause unnecessary damage to the body.
In addition, there are many types of vitamins on the market, with different ingredients and formulas. It is recommended to choose the vitamin that suits you under the guidance of a doctor.
