1. The logic of evolution is the balance of interests and risks, which leads to the imperfection of organs.
2. For example, horses can walk when they are born, but people can't, but horses are not smart and people are smart.
Illness is the price that compromise and compromise must pay. This is the first source of evolution.
1. The speed of human evolution can't keep up with the speed of environmental change, which leads to the imperfection of human adaptation.
2. In today's social life, the body can't adapt to the new environment at once, and the former advantage may become today's disease.
For example, eating sugar, it was not easy to find some sugar in ancient times, and sometimes sugar could save lives, so people in ancient times generally got sugar and stored it quickly. In today's life, it is easy to get sugar, but our genes that like sugar remain, which is likely to lead to diabetes.
1. The risks brought by the diversified environment, the change of behavior patterns and the extension of life span, all these new demands are beyond the reach of human functions.
2. The new requirement for physical hardware and software is stress, which will bring diseases.
3. The evolution brought by gene mutation gives us the ability to repair ourselves, but old age, smoking and drinking will accelerate gene mutation, which is likely to cause cancer.