Among them, vitamin C, vitamin B, etc. Can be supplemented from food as long as there is a balanced diet every day. For example, eat enough vegetables and half a catty of fruit every day to supplement vitamin C. But there is a vitamin that can hardly be supplemented by eating food alone.

That is, vitamin D, many people are not familiar with vitamin D, and even heard that vitamin D can be synthesized in the sun, which is even more unnecessary to supplement. Vitamin D can promote the absorption of calcium, help the baby's bones to be strong, prevent rickets and prevent tooth decay.

Because the human body has a very sophisticated "storage" and "buffering" mechanism, for example, vitamin D is a fat-soluble vitamin, which is usually stored in human adipose tissue. When the intake of vitamin D is insufficient in a short period of time, the human body will use the vitamin D stored at ordinary times to maintain health.

However, if a child often forgets to eat or intermittently supplements, or if the child has been diagnosed with vitamin D deficiency, but fails to supplement vitamin D regularly according to the doctor's advice, it is necessary to pay attention to it and be alert to vitamin D deficiency and related health problems. You may need to take your child to see a reliable doctor and improve relevant tests, such as blood 25(OH)D level, if necessary.

Vitamin D is the most easily deficient vitamin and has always been one of the hot topics in health. Moreover, vitamins are related to height and osteoporosis and become additional nutrients for many people.

Vitamin D is one of the fat-soluble vitamins, which can not only be absorbed into the body from food with oil, but also be transformed through the skin after sun exposure. Its main function is to regulate the normal concentration of calcium and phosphorus in human body, help bones absorb calcium, and maintain the health and normal function of bones. It is also an important nutrient needed for heart metabolism and maintaining immunity.

Children's growth and development are rapid, and there is a great demand for vitamin D. In daily diet, there are not many kinds of foods containing vitamin D, and improper food processing, cooking or storage will also cause damage to them. For infants before 1 year old, breast milk is the best nutrient, but the level of vitamin D in breast milk is far from meeting the physiological needs.

Children can't get enough effective sunshine. Human skin can synthesize vitamin D under the ultraviolet irradiation of the sun, but even in sunny areas, if most of the skin is covered with clothes and not directly exposed to the sun, the synthetic amount of vitamin D is insufficient.

What do vitamins need to remind parents? D is not the more the better. To a certain extent, the human body can metabolize excess vitamins by itself? D, but long-term overdose or short-term extreme intake can also be toxic.

With the increase of age, the time of outdoor activities is prolonged, the food nutrition is more diversified, and the demand for additional oral supplements is reduced. Therefore, parents should have a grasp according to their children's growth, and there is no universal standard.