Healthy fats include omega-3 essential fatty acids sources like tuna, salmon,
flax,
and walnuts. Good
sources of protein include lean meats, fish, poultry, nuts, seeds
and legumes. Healthy carbohydrate sources include fruits, vegetables and whole grains.
It may be easier to eat five or six smaller balanced meals per day rather than eating three large meals, especially if he's not used to eating much at one sitting.