Angina is a common symptom of coronary artery disease, which occurs when the blood supply to the heart is compromised. This leads to chest pain or discomfort, typically triggered by physical exertion or stress. Angina can also be caused by other conditions such as atherosclerosis, hypertension, or heart valve disease. Treatment options for angina include medication, lifestyle changes, and in severe cases, procedures like angioplasty or bypass surgery. Research in this area focuses on understanding the underlying mechanisms of angina, improving diagnostic methods, and developing more effective treatments to manage the condition and reduce the risk of heart attacks.