Peter Attia does not explicitly restrict carbohydrates or starches that are not considered junk, such as rice and potatoes.

“But what I wasn't restricting, and this might be sort of the more relevant question, I wasn't really making any restriction of carbohydrates explicitly and certainly not restricting sort of starches that aren't junk. So I was still eating rice, eating potatoes, eating vegetables, ad libitum, and not otherwise making any other particularly interesting restriction.”