● At high altitudes, especially at altitudes above 4000 meters, people who don't exercise usually have no reaction, while people who exercise often have a reaction, is this statement correct?

Generally speaking, the higher the altitude, the lower the oxygen content. At the same air pressure, the ability of blood cells to carry oxygen is a state. In the plain life habit, to the high altitude area, climate and environmental changes lead to low oxygen, the body does not adapt to the state, this is a normal reaction, with the body is good or bad, exercise and do not exercise is not particularly direct relationship.

● Is the prevalence of coronary heart disease related to sex?

From a clinical point of view, the prevalence of men is about 75-80%. From the perspective of age distribution, women below 50 years old, especially before the end of the menstrual period, are basically free of coronary heart disease. This is because during the menstrual period, estrogen levels are very high and can protect the heart endothelium.

Estrogen also affects cholesterol metabolism. Prevalence in women begins to increase after menopause, and the prevalence in women over 65 is about the same as that in men. However, additional intervention with estrogen supplementation is not recommended, because high estrogen levels can cause gynecological tumors, and dietary adjustment and control are recommended, and women over 50 years of age are screened annually.

● Often eat vegetarian heart disease probability is low?

It's a matter of probability. Vegetarians are less likely to develop coronary heart disease, but they can't say they won't develop coronary heart disease. Clinically, these cases still exist, can not be absolutized.

● Can eating tofu and yam prevent coronary heart disease?

Medically speaking, there is no definitive data. But eating a balanced diet, along with regular exercise and rest, is definitely good.

● Why is cholesterol good and bad?

Cholesterol has many components, there's high density cholesterol, low density cholesterol, and very low density cholesterol, and they're all mixed together and they're called cholesterol.

The difference between good and bad is the composition is different, the density is different. High density cholesterol is good because it can carry away the blood fat deposited on the walls of blood vessels; LDL is bad because it's a major cause of disease. At the time of diagnosis, low density cholesterol is often looked at.

If higher HDL is better, why should there be a normal value or an upper limit?

The upper limit of normality is when you look at a very, very large number of normal people and you use statistics to come up with a confidence interval. Just as a heartbeat of 60-80 times is normal, a heartbeat of 58 times can also be said to be normal.

From a research perspective, the higher the HDL cholesterol, the lower the incidence of coronary heart disease. But even if you want it to be particularly high, it can't go anywhere, which is affected by the body's own range.

● The lower the LDL the better, is it possible to reduce it to as close to zero as possible with preventive drugs?

On the whole, LDL is indeed the lower the better, especially for patients, if it is a patient with coronary heart disease, we require it to be lower than the normal low limit, this time to have a protective effect. However, it is not recommended that there be no symptoms, no vascular problems, and no other risk factors in the case of drug intervention, normal state is good.

● Is coronary heart disease hereditary?

Coronary heart disease is affected by a combination of factors. There are many patients with coronary heart disease in the family, especially the father at the age of 45 and the mother at the age of 50 with early onset coronary heart disease, such a person's risk is relatively high.

However, if they are 60, 70 years old after coronary heart disease, not necessarily high risk, to attract attention, but do not need to cause panic.