So this is just a manifestation of pica. Many people have this situation. They always eat something that we usually think is strange. For example, the older generation likes to eat their own walls.
Because the walls are not all made of yellow mud, but of glutinous rice and sweet potatoes, it is really not an exaggeration for a person to eat all the walls in one winter when he is hungry, but a fact that does happen in reality. I once saw a fact in my column that I love science. An 80-year-old grandmother never eats anything but drinks water. She is in good health.
The program group conducted various tests and took the old man to the hospital for a physical examination. There was nothing unusual until the program group wanted to leave and found that his chimney was smoking. This means that the family must be cooking. When I entered the room, I found the old woman eating sweet potatoes alone, so sometimes there are many false ingredients in this kind of thing.
It can't be said that he lives on bricks every day, but he has a good mouth and strong digestion ability in his stomach, and can digest the existence of bricks in his stomach. However, its main food source at ordinary times is the food we can usually come into contact with, which is suspected of speculation.