Approximately 30% of the Korean population has obesity or abdominal obesity and is often accompanied by obesity related complications such as cardiovascular disease, diabetes, osteoarthritis and even some types of cancer. However, there are not many lifestyle modification treatments available that have long-term effects other than drugs and surgical treatments in the management of obesity.~Preserving muscle mass should also be considered in weight loss especially for elderly adults with obesity, because decreased muscle mass and strength can negatively affect morbidity and mortality in the elderly.~Therefore, the investigators want to evaluate the effectiveness and safety of the protein supplemented very low calorie meals on weight loss, body composition as well as metabolic changes compared with traditional low calorie low fat diet in people with obesity.
This randomized clinical trial will evaluate the efficacy and safety of protein supplemented very low calorie meals on weight loss and weight loss maintenance among people with obesity.