Internal medicine as a medical specialty includes the evaluation and treatment of all medical conditions and symptoms which require evaluation by a doctor, as well as a thorough approach to preventative care and routine health maintenance. A proactive evaluation of otherwise healthy patients for the diagnosis, treatment and prevention of common medical disorders such as Hypertension, Diabetes, and Hyperlipidemia (high cholesterol) has proven to significantly prolong life expectancy. An internist’s emphasis on modification of risk factors through lifestyle changes such as dietary modification, appropriate exercise, and smoking cessation, in combination with medical management of silent disease, has proven to reduce complications of these common disorders, such as heart attacks and strokes. Additionally, screening for colon cancer, osteoarthritis and depression, all of which become more common with advanced age, can greatly prolong a person’s life span and improve quality of life. Every adult, regardless of age and health status, should have a relationship with an internist in order to assure a maximally healthy lifestyle and plan for risk factor modification.