Energy balance theory

Energy balance theory states that your body weight is maintained when the energy (calories) you consume through food and drink matches the energy your body uses for activities, digestion, and other functions. If you consume more calories than you burn, the excess is stored as fat, leading to weight gain. Conversely, if you burn more calories than you consume, your body uses stored fat for energy, resulting in weight loss. This balance between intake and expenditure explains how weight changes occur and underscores the importance of managing diet and physical activity for maintaining a healthy weight.