This literature review examines the complex relationship between overweight, weight loss interventions, and healthy ageing, particularly focusing on the elderly population. The review synthesizes findings from multiple studies to understand the impact of obesity, defined as a BMI of 30.0 kg/m or higher, on the health of older adults, and explores various weight loss techniques, including calorie restriction and exercise. It highlights the prevalence of obesity in developed countries and its association with adverse health outcomes, emphasizing the need for effective interventions. The review discusses the controversies surrounding weight loss in the elderly, considering concerns about behavioral changes, muscle and bone loss, and long-term weight maintenance. It concludes that while a 10% weight loss can be achieved through calorie restriction and exercise, interventions must consider the potential loss of bone mineral density and skeletal muscle. The review emphasizes the need for further research to clarify the mechanisms of muscle and bone loss during weight loss and to assess the long-term effectiveness of weight management strategies in older adults. The review stresses the importance of exercise in weight loss and notes the importance of a balanced approach.