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Lyle posted this on his site on Thursday and I'm going to pass it along to everyone here since many people are probably interested.
Quote:
For years the debate over reduced fat or reduced carbohydrates has gone on and it shows no sign of stopping. The pendulum has actually swung over the years. In the 70’s, the Atkins diet drove interest in very low/reduced carbohydrate diets. In the 80’s, reduced fat diets came into vogue as it looked like dietary fat was more easily stored as body fat and it looked like, so long as fat intake was kept low enough, weight and fat loss would happen (this was true until people went nuts and started overeating low fat foods in excess). In the 90’s, somehow the Zone caught on and then things started to fragment. Cyclical ketogenic/reduced carbohydrate diets became popular and I even wrote an entire book on the topic.
But now, with the joys of the Internet, the entire dietary world has become very divided. With the publication of a book that I shall not name the idea that insulin was the cause of obesity, that reducing insulin was either required or would magically cause fat loss came back into vogue. Nevermind that the entire insulin hypothesis has been completely destroyed. Regardless, the debate goes on with various studies coming in on both sides of the debate. They are often problematic, relying on self-reporting of diet or poor measurements of actual changes (i.e. weight versus body fat). Over the long-term, there is invariably little to no difference in the overall results anyhow and, as I’ve said before and will reiterate below, the best diet is really the one someone can stick to.
Regardless of that, a new study has been blowing up the Internet and since I keep getting or seeing questions about it, I want to weigh in (ha ha) on it.
The executive summary is that low fat group actually burned more fat than the low carb group, though to be fair the level of fat intake restriction was beyond what would be "normal" in order to match calorie intake.
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