Hello: the old man is old. Now his condition is caused by changes in blood quality and blood environment. The contents of sugar, lipid, cholesterol, low density lipoprotein and other substances in the blood increase, leading to metabolic imbalance. At this time, the blood will be very viscous, hyperglycemia will lead to diabetes, and the relatively viscous blood flow will be relatively slow, leading to an increase in blood pressure. Over time, it is easy to form atherosclerosis on the tubular artery of the heart. This is coronary heart disease. There are many precautions in diet: you can eat more rice, porridge, noodles, milk, vegetable oil, vegetables, fruits, light tea and so on. Avoid spicy and irritating foods, such as smoking, baking and frying. Drink more boiled water, there are many details in life that need attention. Get up in the morning and lie down for about 5 minutes before getting up. Be in a stable mood and don't get angry and excited. I wish the old man a speedy recovery. If the development of the disease is controlled in practice while paying attention to diet, I suggest that it is better to use some Chinese medicines in moderation for overall conditioning.