If you look at your friends, you will find that friends in the north are generally higher than those in the south. Why? The following is my summary of why northerners are so tall. Welcome to read and refer to it.
Climatic reasons
Cold places can stimulate people's growth hormone more than hot places. Generally, our appetite is better in winter than in summer. Coupled with the cold weather, people will eat more food. Of course, it's easier to grow taller. So you see, Russia is very cold, because most of them are very cold. Of course, the north of our country is no exception.
Diet structure
In the south, rice and pork are almost absolute staple foods, while in the north, most people are used to eating pasta. Pasta is made of wheat, which contains:
Heat (kcal) 317
Phosphorus (mg) 325
Potassium (mg) 289
Carbohydrate (g) 75.2
Calcium (mg) 34
Protein (g) 11.9
Dietary fiber (g) 10.8
Sodium (mg) 6.8
Iron (mg) 5.1
Selenium (microgram) 4.05
Niacin (mg) 4
Magnesium (mg) 4
Manganese (mg) 3.1
Zinc (mg) 2.33
Vitamin E (mg) 1.82
Fat (g) 1.3
Copper (mg) 0.43
Vitamin B1 (mg) 0.4
Vitamin B2 (mg) 0.1
Northerners also often eat beef and mutton, which has a different impact on the growth of bones and body shape. We southerners only occasionally eat beef and mutton in winter and rarely in summer. There are more winters in the north than in the south. However, these are not absolute. In recent years, the average height of Japanese teenagers has increased rapidly. According to statistics, the average height of Japanese teenagers has exceeded that of our country, which is very unpleasant~
In addition, the higher the latitude (North), the farther away from the equator and the colder the weather, people need to reduce the unit energy loss and must increase the body surface area, so northerners are relatively tall. On the contrary, southerners are close to the equator and the weather is hot. People must reduce their body surface area, so they are relatively short. Just as the northeast tiger is much larger than the South China tiger, it is the same reason.