Restricted Diet
You require a specialized food or fuel that is hard to come by. Unlike Dependency, you do not take damage if you go without...you just can't eat or refuel, which will eventually incapacitate you. Point value depends on the rarity of the item you consume:
Rare: Dragon's blood, exotic nutrient mixture, weapons-grade uranium. -40 points.
Occasional: Virgin's blood, rocket fuel, babies, radioactives. -30 points.
Common: Human flesh, gasoline, liquid hydrogen. -20 points.
Very Common: Fresh meat, any hydrocarbon fuel (gasoline, diesel, etc.), electric batteries, fresh blood. -10 points.
Restricted Diet is appropriate for normal humans with chronic gastrointestinal disorders. (Eh? Some examples, how, please???)
Special Limitations
Substitution: You can try to consume a food or fuel similar to the one you require. For instance, a cyborg that requires exotic nutrients could try ordinary human food, or a machine that requires gasoline could try diesel. This sustains you, but you must make a HT roll after each meal or refueling. Failure means your HT attribute drops by one until you receive appropriate medical or mechanical attention. Critical failure means an incapacitating reaction (GM's decision): severe immune response, engine failure, etc. Those who lack this limitation but for some reason attempt substitution derive no sustenance at all and must still make the HT roll above; treat success as failure and failure as critical failure. -50%.