The shapes of many things are similar to those of human organs. For example, the wrinkles on the surface of walnuts are like human brains, and broad beans are like human kidneys.

Walnut shows wrinkles like human brain. Now it is known that walnut contains 36 kinds of neurotransmitters, which is helpful to develop brain function. The shape of broad bean is a bit like human kidney, but the fact shows that broad bean can really help maintain kidney function.

Extended data:

Classical Chinese medicine treatise on Huangdi Neijing Wuchang Zhengda once said, "Deficiency can supplement it, medicine can dispel it, and food can follow."

To explain the scientific truth of "supplementing shape with shape", we should start from the long evolutionary process that creatures and humans have experienced on the surface of the earth.

Because both animals and humans live on the earth's surface, they achieve a balanced state of material exchange and energy exchange with the earth's surface by breathing, drinking water and eating, so human and animal's internal organs have roughly the same material composition and function, such as the heart is the blood circulation organ and the lung is the respiratory organ.

References:

Quwei Health-People's Network