Lack of lactose digestive enzymes in the body, many people have such a reaction!
This problem is not difficult to solve: 1. If you have to drink milk, it is recommended to eat it with other foods, or pour some milk when cooking to replenish milk.
2. Yogurt can be used instead of milk, with little difference in nutrients. You can try.
3. If you drink yogurt and have loose bowels, you can only suggest that you drink soybean milk instead. Soybean milk has many nutrients, which is of course a little worse than milk.