I understand your dilemma about diet.It is really good that you are.conscious about your diet at your age.First thing is if you are not overweight and having active lifestyle(physical activity of at least an hour per day) I won't stress about the intake of any food item till it is natural.Ghee is.natural and beneficial for health But processed fast food which contains transfatty acids are bad and should be avoided.So home made chapatti, spread with ghee is fine.Enjoy.