Because dark chocolate contains oxalic acid, dark chocolate should not be eaten with calcium-containing foods, otherwise it will combine to form calcium oxalate which is insoluble in water and cannot be absorbed by the human body.

After eating, it will inhibit the digestion and absorption of nutrients to a certain extent, and there will be symptoms such as diarrhea and dry hair, which will affect growth and development. Because of the deposition of calcium oxalate, it can even induce calculus diseases in various organs, such as kidney calculi's disease and gallstones.

In addition, oxalic acid in chocolate combines with calcium ions, and calcium oxalate discharged from urine will also reduce calcium intake, which will lead to calcium deficiency in the human body in the long run.

Common calcium-containing foods: eggs, milk, soybean milk, goat's milk, sesame seeds, tofu and seafood.

2. Dark chocolate should not be eaten with high-sugar food.

Because dark chocolate itself contains sugar, if it is eaten with high-sugar food at this time, it is easy to make the blood sugar in the body rise rapidly. Especially for diabetic patients, it is more necessary to put an end to this situation.

Common high-sugar foods: bread, cream cake, ice cream, honey, sugar, etc.

3. Dark chocolate should not be eaten with high-calorie and high-fat foods.

Although dark chocolate is lower in calories and fat than ordinary chocolate, it still has some calories and fat. Therefore, at this time, it is not appropriate to eat with high-calorie and high-fat foods, otherwise it will easily cause heat and fat to accumulate in the body, gain weight, and easily accumulate food, which will affect digestion.

Common high-calorie and high-fat foods: fried foods, soft drinks, juice drinks, fat meat, beer, nuts and so on.