I’ve heard so many people say the words, “I eat very little, but I don’t lose weight,” and I completely understand how frustrating that must feel. It seems like, despite all your efforts with diet and exercise, your body just doesn’t want to cooperate.
When people ask me why this happens, giving them a clear answer is a bit more complex than I’d like. There are many factors, some simple and some more complicated, that could be playing a role. Let’s take a closer look.
You’re Not Eating the Right Foods
This is one of the easiest factors to explain. I’ve seen people who eat very little, but the foods they do eat are highly energy-dense, meaning they pack a lot of calories into a small portion. Dishes like macaroni and cheese, chocolate, pizza, or tacos fall into this category. Even if you’re eating small portions, if your diet is mostly made up of these foods, it can lead to weight gain or at the very least, make it difficult to lose weight.
Should you avoid these foods forever? Absolutely not. Moderation is key. Enjoy them occasionally, but don’t make them the foundation of your diet.
You’re Burning Less Energy
Our bodies are naturally designed to maintain balance. They don’t want to lose weight because, from an evolutionary perspective, storing energy was crucial for survival.
When you lose weight, it often feels like the process gets harder over time, and that’s partly true. As you lose weight, your body becomes smaller, which means it needs less energy to function. In other words, you burn fewer calories while breathing, digesting, walking, and even resting.
This happens because your basal metabolic rate (BMR), the energy your body uses to perform basic life-sustaining functions, is influenced by factors like your weight, body composition, sex, genetics, and even your gut microbiota. A lower body weight naturally requires less energy.
If you’ve also lost muscle mass, your energy needs decrease even more. That’s because muscle tissue is metabolically active and burns more calories just to be maintained.
Your body also begins to burn fewer calories when you consume fewer calories, a built-in survival mechanism. This response works both ways, more calories consumed can lead to more calories burned,and we’ll explore this further when we talk about reverse dieting later on.
Your Metabolism Is Adapting
When you cut your calorie intake, several hormones in your body are affected. Your body doesn’t know whether you’re in danger or just getting ready for your next beach vacation, it responds the same way in both scenarios.
Since your body resists losing weight, it will try to make the most of the calories you give it. One way it does this is by becoming more efficient at extracting energy from food. Even though the calorie content of the food stays the same, your body can adjust how much it absorbs.
As a result, your body enters a state of stress, affecting hormones like: Cortisol, a stress hormone that increases protein breakdown (reducing muscle mass) and promotes water retention. Leptin and ghrelin, hormones tied to appetite and the brain’s reward system, which can increase cravings and hunger. These hormonal changes, along with altered neurotransmitter activity, slow down your metabolism and make weight loss even harder.
What You Can Do
Increase Your Protein Intake
- Protein helps build and maintain muscle mass, requires more energy to digest, and keeps you feeling full for longer.
Try Reverse Dieting
- If you’ve been dieting for too long, your body may have adapted to the lower calorie intake, making further weight loss nearly impossible. A reverse diet involves slowly and gradually increasing your calories, primarily from healthy fats and carbohydrates, to train your body to burn more energy. Once your metabolism adapts, you can either continue at that intake if you’re losing weight or slowly reduce calories again for steady progress.
Choose a Sustainable Diet
- Constantly jumping between diets and extreme calorie or food restrictions wreaks havoc on your hormones. A sustainable, long-term approach allows your body to adapt properly and keeps your hormones functioning optimally.
Limit Processed Foods
- Processed foods are often calorie-dense and low in fiber, making them easier to overeat and leading to higher calorie absorption. They also tend to have negative effects on overall health.
Revamp Your Exercise Routine
- If you’re not exercising yet, start now. If you already exercise, make sure to include strength training.
This helps build and preserve muscle mass and boosts calorie burn even after you’ve finished your workout.
Manage Other Key Factors
- Elements like stress and sleep are crucial for weight loss. High stress levels and poor sleep can disrupt your hormones, making it much harder to lose weight. Prioritize relaxation techniques and aim for consistent, quality sleep.
Listen to Your Body
- Pay attention to hunger and fullness cues. Eating enough is just as important as avoiding overeating. Learn to distinguish emotional hunger from physical hunger, and respect your body’s needs. When you develop this awareness, weight loss becomes much more manageable.
Change Your Habits
- Many people go on a diet but don’t actually change their lifestyle habits. They might eat lots of “light” products but still maintain an overall unhealthy lifestyle. Sometimes, their chosen weight-loss methods do more harm than good. Focus on improving your overall health, not just your weight.
Be Patient and Consistent
- Metabolic adaptations take time. Training your body to burn more energy is a gradual process, so consistency and patience are essential.
Bibliography
- Piere, B. S., & Kollias, H. (s/f.). Understanding metabolism and metabolic damage. Precision nutrition. https://static1.squarespace.com/static/5c03402ab98a78a29fa2a839/t/5ced45b5104c7babebe243fd/1559053915610/Understanding+Metabolism+and+Metabolic+Damage.pdf
- Trexler, E. (2019, marzo 26). The Metabolic Adaptation Manual: Problems, Solutions, and Life After Weight Loss. Stronger by science. https://www.strongerbyscience.com/metabolic-adaptation/