1, spinach is not recommended to be eaten raw, because spinach is rich in oxalic acid, which will combine with calcium in the stomach to form calcium oxalate, reducing the body's absorption of calcium. Moreover, there may be some pesticide residues in raw spinach, which is not only bad in taste, but also dangerous to health. So when we eat spinach, we can blanch it with hot water before eating it. This will not only prevent too much loss of nutrients, but also make it taste much better and safer to eat.

2. Spinach should not be matched with cucumber in daily life, because cucumber contains enzymes that decompose vitamin C, and spinach is rich in vitamin C, which will reduce the nutritional value of spinach.

3. Spinach contains more oxalic acid, which is easy to combine with some high calcium components to form calcium oxalate which is difficult for human body to digest. Long-term accumulation will bring a burden to the body.

4. Pig liver is rich in copper and iron, and the content of vitamin C in spinach is also relatively high. The combination of metal ions and vitamin C will lead to nutrient loss. Therefore, it is not recommended to mix components rich in metal ions with components with high vitamin content, which will affect the absorption of iron by human body.

5, spinach is not suitable for eating with soybeans, because it will inhibit the release of some copper, which directly leads to poor metabolism of copper.