Introduction: Winter is the season of high incidence of heart disease, mainly because cold weather will make blood vessels contract, which will easily lead to some heart diseases, while cold weather will reduce people's physical activity, lead to the decline of people's metabolic function, slow down blood vessel reflux and cause myocardial infarction. In addition, the weather changes greatly in winter, which is easy to reduce the resistance, thus causing a cold. If you have some respiratory diseases, it will also increase the burden on your body and heart, which will lead to heart disease. Moreover, people don't like drinking water because of the cold weather, so they may drink a few mouthfuls if they think about it, because if the water intake is too small, the blood viscosity will become higher, which will affect the blood supply to the heart and brain and cause heart disease.

How to prevent the harm caused by the cold in winter, we must add clothes in time according to the weather changes, do a good job of cold protection and warmth, avoid clothes being too tight, and make them loose and soft. It is also necessary to adjust the diet reasonably and avoid eating some foods with high fat and high calorie, which may aggravate the rise of blood pressure, which is not good for the body, and also avoid overwork at ordinary times. Go to bed early and get up early to form good living habits, keep a good mood, avoid being too anxious and nervous, and exercise properly at ordinary times can improve your body's adaptability to the cold in winter, reduce your burden and improve your ability to keep out the cold.

Do a regular physical examination. In fact, for some people with heart disease, it is necessary to go to the hospital regularly for a good check-up. It is necessary to ensure that blood pressure, blood sugar, blood lipids and various physical indicators are normal and that the body is in a healthy state, which can also reduce the probability of cardiovascular and cerebrovascular diseases. Can't maximize the burden on the heart.

Finally, winter is a period when various diseases break out, so we must take preventive measures in advance to effectively avoid the occurrence of diseases. For some patients with heart disease, we must reduce the harm caused by temperature fluctuation.