An estimated 90 percent of cardiovascular disease is preventable. Hardening of the arteries can be prevented by reducing risk factors, such as eating a healthy diet, exercising regularly, quitting smoking and limiting alcohol consumption. Controlling blood pressure and diabetes also helps cardiovascular health. Treating strep throat with antibiotics can reduce the chance of developing rheumatic heart disease. The effect of aspirin on cardiovascular health in healthy people has not been determined. United States Preventive Services Task Force. Aspirin is not recommended for the prevention of cardiovascular disease in women under 55 years of age and men under 45 years of age, and people older than this may be suitable for aspirin depending on their individual conditions. For people who already have cardiovascular disease, treatment can also improve outcomes.