If he is on triple tx, with Incivek for the first 12 weeks, he will actually be forced to eat a very high fat
diet during that stage (20 mg of fat within 30 minutes prior to pill), as that medication is carried and absorbed via fat. Other than that one drug there are no real dietary restrictions except eating enough and including some fats for better absorption of the ribavirin. Most people lose their appetite and lose some weight while on interferon and ribavirin.