Answer;
They can be made without any FDA approval
A characteristic of structure-function claims on food labels is that hey can be made without any FDA approval.
Explanations;
Food labels express the nutrient content in relation to a set of standard values known as the Daily Values.
Among the claims that can be used on food and dietary supplement labels are three categories of claims that are defined by statute and/or FDA regulations these includes; health claims, nutrient content claims, and structure/function claims