There is a lot of rain in the south. Is this the key factor affecting the height of southerners?

Rainfall is definitely not the key factor affecting the height of southerners, let alone the key. If rainfall can really have a little effect on height, it's a ghost. Precipitation can only cause some harm to production and life, such as floods, mudslides, landslides and other natural disasters. These natural disasters are easy to cause waterlogging in cities, which will flood a large number of farmland and roads and bring inconvenience to people's travel. However, no matter how much it is pulled, the precipitation will not affect people's height.

According to scientific research, height is a multi-trait control feature, and its direct influencing factors are growth hormone, genetic factors, nutritional intake, acquired physical exercise and living habits. Growth hormone secretion is the most important factor affecting height, including growth hormone, thyroxine and sex hormones. Generally speaking, the growth surgery in the hospital is to inject a drug to make people's growth hormone secrete again, so as to achieve the purpose of growing taller.

Growth hormone will also be affected by climate, and cold places can stimulate human growth hormone more than warm places. Because of the cold weather, people will consume more nutrients to ensure that their bodies have enough heat to fight the cold weather, so people living in cold areas tend to grow taller; People who live in a warm climate do not have high requirements for resisting the cold and do not need to consume too much energy, so their height will be slightly shorter.

In addition to growth hormone, heredity is also a very important key factor. Generally speaking, the height of parents will determine the height of children. If both parents are not tall, their children will not be too tall when they grow up unless there are some genetic mutations. As mentioned earlier, height is controlled by many traits, so the influence of these factors is not certain, but relative, but in any case, the relationship between precipitation and height is pure nonsense.