Actually "extra" fat does not help but depending on how low-carb he goes he'll need a certain amount of fat to avoid ultra-low kcal. Also certain key foods like eggs, pastured butter, liver, salmon, coconut, & cocoa have all been associated with normalizing metabolism and appetite and they contain unavoidable fat.
Originally Posted by CoachJames
Exactly. Many commercial programs are just as devoid of nutrients as the fast food and snacks they're replacing--I have a coworker who keeps trying Nutrisystem but it's all fortified crackers and noodles, thickened mystery soups and the like with maybe 1-2 oz. of chicken or tuna.
Originally Posted by SalubriousU
Lots of: urban hiking, cycling, sprinting
Lots of: fresh meat, seafood, eggs, organs, tubers, starch fruits, vegetables, meat fat, dairy fat, oil fruits
Some: cured meat, dairy protein, sweet fruits, rice, pulses, tree nuts, oil seeds
Minimal: soy, refined proteins, sugar, liquid carbohydrate, grains, refined oils, peanuts