How effective is a coronary artery bypass surgery for treating atherosclerosis?

It depends: Depending on the number, location, and severity of the blockages, pumping function of the heart, and presence of other diseases like diabetes, bypass surgery can be very effective. For other situations, medical therapy or percunateous coronary interventions can be better. a healthy lifestyle is always the foundation of treatment, and a physician should be consulted for the most appropriate data.