Obesity among the older adults has been increasing in the past 20 years. It is an important influence factor of non-communicable disease. The adverse consequences of obesity include cardiovascular disease, type 2 diabetes, arthritis, stroke, cancers, and increased risk for physical and cognitive disability. These chronic disabilities affect resources for medical and social services. Small changes in life style, diet and exercise of senior adults may have enormous benefit on their level of activity performance, cognitive function, and quality of life.