The impact is certain. Experts from the General Hospital of Shanghai and Tibet Military Region demonstrated that "the weight of newborns born in plateau by immigrant Han women, especially primiparas, is lower than that of local Tibetans and plain Han people, and the placental coefficient is significantly higher than that of local Tibetans, indicating that the plateau environment affects the intrauterine growth and development of immigrant Han fetus." The medical level and conditions in Ali area are still very backward. I have been in Ali area for almost three years. My Tibetan friends usually go back to Lhasa to give birth, and my Han friends all go back to the mainland. Never heard of giving birth in Ali. Don't listen to 1 building. Tibetan friends in Tibet have not had altitude sickness yet. Why do Han friends have it? !