There is a possibility of sudden death after staying up late with vague heart pains, but not everyone who has vague heart pains after staying up late will lead to sudden death. The vague heart pain after staying up late may be due to insufficient coronary artery blood supply and temporary ischemia and hypoxia of the heart muscle causing angina pectoris. If the symptoms are mild and short-lived, they can be recovered by taking more rest and improving nutrition. If the myocardium is ischemic for a long time, it may develop into myocardial infarction, when induced acute myocardial infarction, when the pain is intense and persistent, can radiate to the back of the shoulder, and sudden death may occur. So when you have vague heart pain symptoms after staying up late, especially if you have high blood pressure and diabetes, you should seek medical attention early if your symptoms are not relieved. If you have vague heart pain after staying up late, it is recommended to go to the cardiology department for electrocardiogram, coronary angiography and other examinations to clarify the cause and give targeted treatment. Pay attention to regular work and rest and develop healthy living habits.