No, the congenital difference is very small. The acquired diet culture, historical and cultural habits, diet structure and physical exercise are decisive factors. After the second and third generations, Asian immigrants in the United States have no obvious difference in physique with westerners. There are several incomplete reasons for the short stature in East Asia: 1. In the diet, protein is lower than that in the west, with less meat, more salt and spicy food. Excessive cooking leads to nutrient loss. 2. The humidity of historical living environment is relatively high, which makes southerners not as tall as northerners. 3. The cultural environment is quiet, physical exercise is seriously inadequate, and exam-oriented education is harmful. 4. The quality of meat is not good, there are many white meats in pork, and the supply of red meat and milk such as mutton and beef is insufficient and the price is high. 5. Institutional and cultural problems, excessive oppression of people and slow improvement of food and living standards are common problems in East Asian countries. There's always something you can't afford! 6. The gap between the rich and the poor. Poor people's habits of excessive thrift and thrift. 8. The necessities of life blindly pursue brand value, create false concepts, lack social control, high housing prices and high rents push up costs and prices, and reduce living standards; The sky-high price of Telunsu, all kinds of expensive milk drinks with serious nutrient loss, pure milk mixed with water and other evil phenomena, not to mention Sanlu! 9. This problem is unique to China. Poor child welfare!