When weight is lost, the body’s metabolism undergoes several changes, primarily impacting energy expenditure. Initially, weight loss often leads to a decrease in basal metabolic rate (BMR), as there is less body mass requiring energy to sustain. This adjustment can make it more challenging to continue losing weight over time, leading to what is often referred to as metabolic adaptation. Additionally, hormonal changes occur, influencing hunger hormones such as leptin and ghrelin. These adaptations emphasize the importance of a balanced approach to weight loss, including maintaining a healthy lifestyle to counteract these metabolic shifts.