Hello lybrate-user
All the nutrients are essential for healthy body whether it is carbohydrates, protein fat, minerals and vitamins. The recommendation is given on the basis various factor like vitals, health parameter, physical activity and many more. You can not have it like this. Some people assume that if they are underweight and if they will eat more calories they can easily achieve their target weight. But it is not like that.
So ,if you want to discuss more, consult me thru lybate.