When you are keto-adapted, you become much more efficient at utilizing fat as fuel, and some studies show that slightly overfeeding on fat alone may not cause significant weight gain. However, keep in mind that fat is calorically dense, with 9 calories per gram. Eating excessive amounts of fat can increase calories to an extent that may prevent certain benefits from occurring, such as fat loss. Supplying your body with too much dietary fat may keep it from breaking down your own fat stores for energy. As with everything, keep the fat content of the diet in context, and don’t binge on fat bombs.