A calorie deficit results when caloric intake is lower than energy expenditure, leading to weight loss over time. This deficit prompts the body to utilize stored fat for energy, thereby reducing body weight. Effective weight loss strategies focus on creating sustainable calorie deficits while ensuring adequate nutrient intake to support overall health. It’s important to approach weight loss gradually to avoid metabolic slowdown and ensure long-term success. Balancing caloric reduction with exercise enhances the efficacy of a calorie deficit for weight management.