About Food

There are many kinds of food in the world. Sometimes I ask why, no one can answer it. I have spent several days studying the problem. then I get to a conclusion. The basic reasons of it is environment and history.
First it is about environment, In ancient times, China was an agricultural country and farmers had more spare time. In Western countries most people were herder. they took care of animal,all the time. they didn't stay in one place, they moved all the time. they had little time to prepare their food. In China, people could spend even more time in their cooking than Western countries people. They could cook many kinds of food, and it tasted even better.
Chinese main products were coin and wheat. Western countries' main produces were meat. As a result, people of Western countries eat more meat than the Chinese every day.
In Western countries, winter is longer than China. People of Western countries must eat food that contain more fat and butter. But in modern time, they don't do any physical work, and in winter they stay at home to keep warm, their work and living conditions change. They don't need so much energy, but their dietary hasn't changed. So there are so many weight over people in western countries.
Because the condition of work and life have changed, people have to change their diet.