Does it affect the health of Han people who often travel to Tibet?

In the short term, the prevention of altitude sickness is the main thing, and there is no big impact. But it has already had an impact, especially those engaged in manual labor in high altitude areas of Tibet. If you stay at an altitude of more than 3000 meters for a long time, due to the decrease of oxygen partial pressure, the diffusion ability of oxygen in alveoli to capillaries decreases, and the release function of oxygen carried by blood and combined oxygen in tissues is blocked, resulting in the relative lack of oxygen supply to the human body. The body increases pulmonary blood flow through a series of compensatory mechanisms, such as deepening breathing, accelerating frequency and increasing heartbeat, so as to improve collective blood supply and oxygen supply. The heart will gradually grow bigger. Harmful to the body.

So, if it is not necessary, try not to stay in the sky for a long time.