Coronary artery disease (CAD) is treated with a combination of lifestyle changes, medications, and, when necessary, procedures to restore blood flow to the heart. Most people with CAD will manage it for life, and treatment focuses on slowing plaque buildup in the arteries, reducing the risk of heart attack, and relieving symptoms like chest pain or shortness of breath. The specific mix of treatments depends on how severe the disease is and how many arteries are affected.
Lifestyle Changes That Slow the Disease
Diet and exercise form the foundation of CAD treatment, regardless of what medications or procedures you also need. Two dietary patterns have the strongest evidence behind them. The Mediterranean diet centers on fruits, vegetables, whole grains, legumes, nuts, and olive oil as the primary fat source, with moderate amounts of fish and poultry and limited red meat. The DASH diet emphasizes similar whole foods along with low-fat dairy and limited sodium, and it has been shown to significantly reduce blood pressure, especially in people who already have hypertension.
For exercise, the target is at least 150 minutes of moderate-intensity aerobic activity per week, or 75 minutes of vigorous activity, plus muscle-strengthening exercises at least two days a week. You don’t need to do it all at once. Sessions as short as 10 minutes count toward the weekly total. For additional benefit, you can work up to 300 minutes of moderate activity or 150 minutes of vigorous activity per week.
If you smoke, quitting is the single most impactful change you can make. Within two years, about a third of the excess heart disease risk from smoking is eliminated. Over 10 to 14 years, the risk drops all the way back to that of someone who never smoked. That timeline matters because it shows the benefit starts early and compounds over time.
Core Medications for CAD
Nearly everyone diagnosed with CAD takes at least two or three medications long-term. These aren’t just treating symptoms. They’re actively protecting the blood vessels and reducing the chance of a heart attack.
Statins are the cornerstone. They lower cholesterol and help stabilize the fatty plaques inside artery walls, making those plaques less likely to rupture and cause a clot. The treatment goal for LDL cholesterol (the “bad” cholesterol) in people with established CAD is 70 mg/dL or lower according to U.S. guidelines. European guidelines set the bar even lower, at 55 mg/dL or below.
Beta-blockers slow the heart rate and lower blood pressure, which takes strain off the heart. They’re particularly useful if you’ve had a heart attack or if your heart has been weakened by reduced blood flow. Blood pressure targets for CAD patients are a systolic reading (the top number) below 130 mmHg, with the bottom number ideally between 70 and 80 mmHg when systolic is well controlled.
Antiplatelet drugs, most commonly low-dose aspirin (81 mg daily), help prevent blood clots from forming on plaques inside the arteries. After a stent procedure or heart attack, you’ll typically take two antiplatelet medications at the same time for a period of 6 to 12 months. This is called dual antiplatelet therapy, and the exact duration depends on your specific situation: whether you had a heart attack or had a stent placed for stable symptoms, and how your bleeding risk compares to your clotting risk. Some patients continue on two agents for longer if their risk of another cardiac event outweighs the increased chance of bleeding, which rises by about 1% over that extended period.
When Stents or Surgery Are Needed
Medications and lifestyle changes can manage many cases of CAD, but when blockages are severe or causing significant symptoms despite medication, a procedure to physically restore blood flow becomes necessary. The two main options are percutaneous coronary intervention (PCI), commonly known as stenting, and coronary artery bypass grafting (CABG), or bypass surgery.
Stenting involves threading a catheter through a blood vessel to the blocked artery, inflating a small balloon to open it, and placing a wire mesh tube to hold it open. It works best for one or two blocked arteries and for focal, straightforward blockages. Recovery is relatively quick since there’s no open surgery involved.
Bypass surgery reroutes blood around blocked sections using a vessel taken from your chest, leg, or arm. It replaces the entire affected segment of artery rather than just opening a single point of blockage, which makes it more effective for complex disease. Patients with blockages in three or more arteries, disease in the left main artery (which supplies most of the heart’s blood), diabetes, or weakened heart function generally do better with bypass surgery.
For patients who fall between these categories, doctors use a scoring system that rates the complexity of the blockages. A high complexity score points toward bypass surgery, while a low score means either approach can work well. In those cases, you and your doctor can weigh the tradeoffs: stenting offers faster recovery but may require repeat procedures, while bypass surgery is more invasive upfront but often provides more complete and durable results.
Cardiac Rehabilitation
Cardiac rehab is a structured program of supervised exercise, education, and counseling that typically follows a heart attack, stent placement, or bypass surgery. It’s one of the most effective treatments available, yet many patients skip it or drop out early. The difference in outcomes is stark: people who complete a full course of 36 sessions have a 47% lower risk of death and a 31% lower risk of heart attack compared to those who attend only one session. Cardiac rehab also reduces hospital readmissions.
Programs typically run several weeks and include monitored exercise sessions, nutritional counseling, stress management, and help with quitting smoking if needed. If your doctor recommends it, completing the full program is one of the highest-value things you can do for your long-term survival.
Ongoing Monitoring
CAD is a chronic condition, and staying on top of it means regular follow-up. At minimum, you should see your cardiologist or primary care provider at least once a year if your condition is stable and your medications are working well. These visits typically involve checking blood pressure, cholesterol levels, symptoms, and how well you’re tolerating your medications.
One thing you don’t need if you’re feeling fine: routine stress tests. Current guidelines recommend against periodic imaging or stress testing in stable patients who haven’t had a change in symptoms or functional ability. These tests are reserved for situations where something has shifted, like new or worsening chest pain, increasing shortness of breath, or a decline in your exercise tolerance. Unnecessary testing can lead to false positives and procedures you don’t actually need.