These researchers have correctly identified foods high in nickel content ( e.g. , nuts , chocolate , beans ) .
Researchers have sometimes incorrectly advocated the avoidance of cutlery , bowls , etc. made from stainless steel , which do not release significant amounts of nickel .
These researchers have correctly identified foods high in nickel content ( e.g. , nuts , chocolate , beans ) , but they have sometimes incorrectly advocated the avoidance of cutlery , bowls , etc. made from stainless steel , which do not release significant amounts of nickel .