If you want to become obese like a sumo wrestler you may want to eat a lot of carbs, like they do. And by a lot of carbs, we mean a thousand grams per day… or ten bowls of rice at every meal.
The sumo wrestlers are basically on an extremely low-fat diet. Why do they eat mostly carbs, instead of fat? Perhaps because carbs stimulate insulin, the fat-storing hormone, so that they can increase their body fat.
If you do not want to look like a sumo wrestler, you may want to go more easy on the carbs.