How many calories per gram do fats provide?

Fats provide 9 calories per gram, making them the most calorie-dense macronutrient. This is crucial in nutrition because it highlights the role of fats in energy provision for the body. Unlike carbohydrates and proteins, which provide 4 calories per gram, fats are concentrated energy sources and play essential roles in various bodily functions, including hormone production, nutrient absorption, and cellular structure. The high energy density of fats has implications for dietary planning and weight management, as consuming high amounts of fats can lead to increased caloric intake and potentially weight gain if not balanced with overall energy expenditure. Understanding this aspect of fats is fundamental for anyone studying nutrition, as it emphasizes the need to include healthy fats in a balanced diet while being mindful of their calorie content.