Although the cold winter is the high incidence of cardiovascular disease, but in the hot and sultry Indian summer season, the humidity in the air is increased, oxygen content is reduced, usually suffering from hypertension, coronary heart disease often feel uncomfortable, chest tightness, shortness of breath, dizziness and other symptoms. In addition, high temperature weather will make the human body sweat too much, blood concentration, if not timely supplement water, easy to form plaques; Acute myocardial infarction occurs when plaque breaks off and clots form, blocking blood vessels. In addition, people often do not get a good sleep on hot summer nights, which is also an important cause of cardiovascular and cerebrovascular diseases. Sultry weather can also make people mood swings, mood irritability, which is also a risk factor for coronary heart disease. In this period of time, because of work overworked and lack of rest, especially to guard against sudden attack of myocardial infarction.
The best heading for this paragraph is "Cause of cardiovascular and cerebrovascular diseases."