The answer is yes. Obesity, for whatever reason, weighing more than 20% of the standard weight will cause a series of changes in the body. Because of the excessive accumulation of body fat, their weight is obviously overweight, their energy consumption and oxygen consumption increase obviously during exercise, and their physical activities are restricted to a certain extent. At the same time, obesity causes chest wall thickening and diaphragm elevation, which affects respiratory function and causes symptoms such as shortness of breath. The effective circulating blood volume, cardiac output and stroke output of severely obese people increased. In addition, obese people often have hypertension, coronary heart disease, or increase the burden on the heart, or increase the heart fat inside and outside the myocardium, all of which have a certain degree of impact on heart function, and severe cases can lead to heart failure.

In the plain environment, the burden of cardiopulmonary function of obese people is already very heavy, and the cardiopulmonary reserve capacity is reduced. If these people enter the plateau, it will be more difficult for them to adapt to the hypoxia environment at the plateau than for people of medium weight.

If they are only slightly obese, but their weight does not exceed 20% of the standard weight, these people can gradually adapt to the altitude hypoxia environment, although their adaptability is worse than that of thin people.