The new study was led by the NIH’s Kevin Hall, who culled a huge amount of data looking at low-fat vs. low-carb diets. The models he developed suggested that low-fat, in contrast to popular opinion, should technically be superior to low-carb diets in long-term fat loss. But he needed human subjects in the lab to really prove it.
In the unending tug-of-war between low-fat and low-carb diets, it’s seemed in recent years like the low-carb camp has inched ahead, at least for short-term weight loss. But a well-controlled new study finds that – at least in the lab – low-fat might be slightly better for weight loss over the long term. That does not mean that we should all revert to the low-fat insanity of the ’80s and ’90s. Rather, the more valuable take-home message might be that rejecting carbs may not be so necessary for long-term weight loss as many of us believe, and that a nutrient-balanced diet is probably the smarter strategy in the long term.