#5. Higher in Calories
At 9 calories per gram, it has more than double the calories of a gram of protein (4 calories per gram) or carbohydrate (3.75 calories per gram). Fat, protein and carbohydrate are the only kinds of constituents in our diet (apart from alcohol, which contains 7 calories per gram) that give us calories. All the other things we eat and drink (water, vitamins, minerals, fibre, micro-nutrients) contain no calories. Put simply, weight for weight, fat is higher in calories than any other food.