Nucleotide is one of the basic units of nucleic acid and an important nutrient for human body. In nutrition, nucleotides have the following functions: 1. Enhance immunity: Nucleotide can promote the normal development and function of human immune system, enhance human immunity and reduce the occurrence of diseases.

2. Promote growth and development: Nucleotides can promote growth and development, especially for infants.

3. Improve intestinal flora: Nucleotide can promote the balance of intestinal flora, enhance the barrier function of intestinal mucosa, and prevent intestinal inflammation and infection.

4. Improve cardiovascular health: Nucleotide can reduce blood fat and blood pressure, and prevent cardiovascular diseases such as arteriosclerosis.

5. Improve the health of nervous system: Nucleotide can promote the normal development and function of nervous system and prevent nervous system diseases.

In a word, nucleotide is one of the most important nutrients in human body and plays an important role in human health. The answer is for reference only.