The second category is lipids, such as nuts, fat, egg yolk, etc., which provide fatty acids for the body.
The third category is protein, such as eggs, milk and soybeans, which provide high-quality protein for the body.
The fourth category is vitamins, such as kiwifruit, apples, pears, vegetables and so on, which are very rich in vitamins.
The fifth nutrient is minerals, such as calcium, iron, zinc and iodine.
The sixth nutrient is the water you often drink, and it is also a very important nutrient.
The seventh nutrition is dietary fiber, which is very important for the maintenance of intestinal microecology.
So the seven nutrients refer to carbohydrates, lipids, protein, vitamins, minerals, water and dietary fiber.