 What Can We Do About It?
In the first post, we looked at why so many people gain weight in the modern world. We are running ancient software in a very modern environment. Our brains evolved in a world where food was scarce. Now we live in a world where food is everywhere, available 24/7 and designed to make us want more. So the obvious next question is: What can we do about it? The frustrating answer is that there is no single fix. No magic diet. No fat-burning supplement. No metabolism hack. No product you can wear, drink or rub onto your skin. (Although - the drugs are doing a good job now) The weight loss industry is full of promises to “lose 10lbs in a week” or “boost your metabolism instantly.” Those claims are everywhere because they are exciting and because we all want an easier answer. But they are not true. You cannot lose 10lbs of body fat in a week. We still have to obey the laws of thermodynamics. If something promises to “hack” the energy balance equation, it is probably not evidence-based. The problem is not that people are lazy. The problem is that people are surrounded by tempting promises in an environment that makes weight gain easy and long-term weight loss difficult. Why Most Diets Fail Most diets try to solve the problem in one of three ways:
That is why there are so many different diets:
They all sound different but most of them are really doing the same thing: They are trying to get you to eat less. The problem is that most people do not stick with them. The average person in a large commercial weight loss programme lasts around six or seven weeks. Not because they are weak, because being hungry, feeling restricted and constantly thinking about food is exhausting. The best diet is not the perfect diet. It is the diet you can still follow six months from now. And one year from now. What the Evidence Actually Says When researchers look at the big picture, not just one study or one trendy headline, a few things matter more than anything else. The biggest factor is energy density. That means how many calories are packed into each gram of food. Foods that are high in calories but small in volume make it very easy to eat more than we realise. Think:
These foods are usually high in fat and sugar, low in water and easy to eat quickly. They are highly rewarding, but not very filling. On the other hand, foods that are lower in energy density help us feel fuller with fewer calories. These foods tend to have:
Think:
According to the Professor James Stubbs, the characteristics of an evidence-based diet are surprisingly simple:
That last point matters more than most people realise. If your diet is miserable, you will not stay on it. Why We Eat When We Are Not Hungry One of the most useful ideas from the lecture I attended is that we do not only eat because we are hungry. We eat because:
That is why willpower is such an unreliable strategy. You can make a great decision at 8am, then have a stressful day, skip lunch, walk into the kitchen at 8pm and suddenly the biscuits “just happen.” This is not because you have failed. It's because you are human. Professor Stubbs calls this “dual processing.” Part of the brain wants the long-term goal and the other part wants immediate comfort, pleasure and relief. And in a world where food is cheap, easy and constantly available, the short-term part often wins. Why Exercise Helps Less Than People Think Most people believe exercise is the main way to lose weight and it does help but not in the way most people think. Exercise alone tends to produce surprisingly small changes in body weight. Even diet and exercise together often produce average weight losses of less than 5% of body weight. Why? Because creating a large calorie deficit through exercise is hard especially if somebody is already overweight, unfit or exhausted. The less fit you are, the harder exercise feels and that does not mean it isn't working. It just means exertion feels much greater when fitness is low. This is why “go hard or go home” often backfires. The evidence suggests something much simpler: Start small. Go from:
Physical activity becomes more important later. Not because it causes huge weight loss but because it's one of the best tools we have for keeping weight off. What About Weight Loss Drugs? GLP-1 medication drugs are more effective than previous weight loss drugs and they can help people lose a significant amount of weight but they are not magic. They work best alongside:
And if someone stops taking the drug without changing their habits, most of the weight comes back. The drug is a tool not the whole toolbox. The Real Answer: Multiple Small Wins The biggest message from this lecture is that there is no single thing that fixes weight gain. Diet on its own has a small effect. Exercise on its own has a small effect. Medication on its own has a small effect. But when you combine them, the effect becomes much more powerful. That is why the most effective approach usually includes:
In other words: You do not need one perfect solution. You need enough small things working in the same direction. Because long-term weight loss is not about finding the most extreme plan. It is about building a way of eating and living that works in the real world. In the final part of this series we'll discuss how to make weight loss work for you in the modern world.
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