Family medicine is a specialty that focuses on comprehensive primary care of people of all ages. Having a long-lasting relationship with a local family doctor who knows your health history and current dietary needs is greatly beneficial. A family physician can diagnose and treat all types of conditions that might require medication, surgery or lifestyle changes such as eating more calcium. Because there is such a connection between your health and what you eat, your local family physician may advise you to work with a local registered dietitian or nutritionist. For example, eating a diet low in sodium and fat can reduce your risk of developing heart disease or stroke.