在众多营养物质与免疫力的关系中，营养不良或营养过剩都会导致机体免疫功能的下降，一些营养的或非营养性的物质都会对机体免疫起到一定作用。因此，营养与免疫力有着密切关系，采用合理的营养，能够建立完善的免疫系统，增强机体免疫力或抗病力。

In the relationship between many nutrients and immunity, malnutrition or excess nutrition will lead to the decline of the body's immune function, and some nutritious or non-nutritive substances will play a certain role in the body's immunity. Therefore, nutrition and immunity are closely related. The use of reasonable nutrition can establish a good immune system and enhance the body's immunity or disease resistance.