Vitamin D is essential for children's health, especially in terms of growth and bone health.

Measurement of 25-hydroxy vitamin D (25-OH VD) is the most reliable diagnostic standard for vitamin D levels.

Vitamin D deficiency in children harms:

◎1.Lack of vitamin D may cause rickets, which is a disease characterized by softening and deformation of bones, which may lead to short stature and deformed bones in children, and in severe cases, intelligence may also be affected.

◎2.Vitamin D deficiency may also affect children's immune function and increase the risk of respiratory diseases.

◎3.Long-term vitamin D deficiency may also increase the risk of osteoporosis in adulthood, affect muscle mass, and may be related to allergic diseases such as dampness and food allergies.

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