Calories explained! Why you're not losing weight | Nutritionist Explains | Myprotein

Calories explained. Why you're not losing weight. Learn how calories, energy balance, and fat loss actually work, plus the most common reasons people struggle to lose weight despite eating what they believe is a calorie deficit. In this video, expert nutritionist Dr Richie Kirwan explains the science of calories, calorie deficits, and weight loss, helping you understand why the scales may not be moving and what you can do to achieve sustainable fat loss. Key Facts: Weight loss is driven by maintaining a calorie deficit over time. Hidden calories, portion sizes, and liquid calories are common reasons people unintentionally eat more than they realise. Exercise helps increase energy expenditure, but nutrition has the biggest impact on creating a calorie deficit. Daily body weight naturally fluctuates due to water, glycogen, sodium intake, and digestion. Consistency over weeks is far more important than day-to-day changes on the scales. FAQ: Q: Why am I not losing weight in a calorie deficit? A: The most common reasons include underestimating calorie intake, overestimating calories burned, inconsistent tracking, or not maintaining a true calorie deficit over time. Q: Do calories really matter for weight loss? A: Yes. Regardless of the diet you follow, maintaining a calorie deficit is the fundamental driver of fat loss.