The necessary nutrients the body there are many in nutrition, summed up as: protein, carbohydrates, lipids, vitamins, minerals and water in six categories, which must be an adequate supply.

• 人体所需的营养素有很多种，在营养学里归纳为：蛋白质、糖类、脂质、维生素、矿物质和水六大类，这些都必须充分供应。