It is well known that smokers are prone to lung cancer, and quitting smoking can reduce the incidence of lung cancer. However, some scholars have found that smoking an ordinary cigarette can increase systolic blood pressure by 10-30 mmHg. Smoking a large number of cigarettes for a long time, that is, 30-40 cigarettes per day, can cause continuous contraction of small arteries, and over time, the smooth muscle of the small artery wall degenerates and the inner wall of the blood vessels gradually thickens, forming small arteriosclerosis, leading to the occurrence of hypertension. In normal blood pressure, daytime systolic and diastolic blood pressure are higher than non-smokers (Figure); people without hypertension can prevent the occurrence of hypertension by quitting smoking, and people with hypertension should quit smoking. And smoking is not only harmful to themselves, passive smokers are no less harmful than smokers. Smoking not only affects blood pressure, but also blood lipids and blood sugar levels, all three of which are risk factors for cardiovascular disease, so for the health of your family, quit smoking!