Health is the ability to function at your best. Good health begins with a healthy diet and regular physical activity. Healthy habits can prevent many illnesses and injuries, including heart disease, stroke, cancer and type 2 diabetes mellitus (formerly known as adult-onset diabetes). Regular checkups by your doctor are important for early detection of problems that may lead to poor health outcomes such as these diseases or conditions!   Early diagnosis allows for prompt treatment which often leads to better prognosis than when an illness or injury progresses unchecked leading up to serious medical complications. The earlier you detect a problem, the greater chance exists for successful long-term management. There are many ways in which people can improve their overall health through lifestyle choices  Proper nutrition not only provides essential nutrients needed for good bodily function but also supports optimal cognitive development.