Neither cholecystitis nor diabetes is a complicating symptom of heart attack. However, diabetes may complicate a heart attack after an attack. Cholecystitis is a symptom of inflammation of the gallbladder due to localized tissue damage and bacterial infection, which is generally a digestive system disease, usually caused by improper diet or excessive alcohol consumption and other stimuli. Heart attack refers to myocardial ischemic necrosis caused by coronary artery blockage in the cardiovascular area and insufficient blood supply. There is generally no direct link between heart attack and cholecystitis, so cholecystitis is not a complication of heart attack. Diabetes mellitus is a metabolic disease in which blood glucose levels are significantly higher than the normal blood glucose range, including type 1 and type 2 diabetes. Diabetes mellitus can cause metabolic abnormalities and blood vessel damage after an attack, and therefore can be complicated by heart attacks. However, diabetes is not a complication of heart attack because it is not usually associated with heart attack. After a heart attack, you should consult a doctor to confirm the diagnosis and treatment in a timely manner, and you need to prevent and control complications under the guidance of a doctor.