To protect your heart, you must first know what the early signs of heart disease are. If you don’t know, you will delay the disease. I met a patient in the outpatient clinic who said he suddenly felt chest pain two weeks ago and the pain stopped after 20 to 30 minutes, so he did not go to the doctor, only to have the chest pain again three days ago. After listening to his story, I thought his heart problem was serious and instructed him to get an EKG immediately. As soon as it was done, the EKG room left him with what they said was an acute myocardial infarction. Upon admission, the patient immediately underwent coronary stent intervention. This patient was not aware of the signs of heart disease and therefore did not realize the severity of the chest pain, which is why it was delayed for so long. The earliest sign of heart disease is chest pain, and the reason for the pain is that the heart is “hungry”, that is, the blood supply is not enough, and it “strongly protests” in the form of pain. However, some people also do not feel chest pain. I once met a patient who came to see the doctor with chest tightness and lack of energy. Later, when he took a test, his urine sugar was very high and his blood sugar was also very high, so he had been suffering from diabetes for a long time, but he didn’t know it. Diabetes caused lesions in his nerve endings, which is equivalent to the aging of the electrical wires on the roof, and the current does not pass easily. After the nerve problem, the pain signal can not be transmitted inside the brain, so you can not feel the pain. Therefore, when you feel chest tightness, you should also think “there may be a heart problem”, pain and chest tightness is an early signal of myocardial ischemia. Another signal is weakness. Some people feel weak, the more you move, the more powerful, rest a little better. When this happens, you should also think of heart problems. It is not necessarily that the heart is “hungry”, it may be that the heart can not do work, not able to provide enough blood to the whole body, so it is manifested as weakness. Another sign is panic, medically known as palpitations. There are several types of palpitations, one is feeling a fast heartbeat, one is not a fast heartbeat but feels fast, and one is a slow heartbeat but feels like the heart is beating. All of these are highly suggestive that there is something wrong with the heart. Palpitations are the most common clinical sign of heart disease. One more sign is dizziness. Last year I admitted a patient who fainted from time to time, but after hospitalization I just couldn’t find out the cause. I analyzed that it was a heart problem. When I did 24-hour ECG monitoring, I found nothing wrong with his heart. However, I still thought that a heart problem was more likely, so I gave him continuous ECG monitoring. One night, he had another attack and fainted. I pulled out the ECG monitoring data and saw that his heart did not beat for 4 seconds at the longest, and his heart rate was about 20 times. This long interval caused a lack of blood supply to his brain. So, he was fitted with a pacemaker. As soon as his heart slowed down, the pacemaker automatically activated and he did not faint. Also, edema and low urine are a sign, and decreased urine output and edema often come together. If you feel shortness of breath after activity and swollen feet after a day of activity, you should think that your heart may not be functioning well. So, isn’t decreased urine output a kidney problem? The blood supply to the kidneys also depends on the heart, and it is only when the supply is sufficient that a normal amount of urine can be formed. When the heart is not functioning well, or even in decline, the amount of blood supplied to the kidneys decreases, and the amount of urine naturally decreases. If you can’t urinate, you will definitely become edematous. Therefore, when you experience chest pain, chest tightness, palpitations, weakness, dizziness, edema, and little urine, you must see if there are any problems with your heart.