Veterans Walk for Health Study

Inclusion Criteria: * Is newly referred from a VA physician for nutritional counseling or has responded to an advertisement for the study - Has one of the following diagnoses: diabetes, coronary artery disease, hypercholesterolemia, hypertension, obesity. * Is ambulatory and able to comfortably walk at least one block. * Has a body mass index (BMI) of 28 or greater. * Is not already regularly active (30 minutes a day, 5 days a week of moderate intensity physical activity). * Is in the contemplation or preparation stage of readiness to become more physically active. * Is willing to try a walking program. * Can communicate comfortably in English. Exclusion Criteria: * Has attended a nutritional counseling session in the past 28 days. * May be at risk for adverse cardiovascular events with a walking program--specifically participants who: * have symptoms of cardiovascular disease (CVD) while walking; * have been told by a physician that walking might be dangerous; or * have a stress test scheduled in the next two months.