LeBron James is eating a low carbohydrate diet

That's according to the Wall Street Journal: 

The basketball world has been buzzing lately about an unexpected decision LeBron James made this summer. It has already had sweeping effects across the NBA, and it has radically changed how everyone sees the sport's biggest star.

He cut carbohydrates from his diet.

Nutrition science is undergoing a paradigm shift, and I would count this as merely another high-profile example of the changing attitudes towards meat, fat, sugar, and carbohydrates. But the effectiveness of carbohydrate restriction on reducing obesity, heart disease, diabetes etc. in the general population is far from proven. Celebrities and athletes have much a higher incentive to stay fit and beautiful, more capability to institute external forcing mechanisms on their behavior (trainers, living in areas devoid of ice cream trucks), and possibly a greater inbuilt biological or psychological capacity to stay healthy and thin. Add to this the social and media benefit of trying something novel, and the supposed effectiveness of celebrity diets isn't a very good data point to support any theory. More good science is in order.