CFR › Title 21 › Part 101 › §101.7121 CFR §101.71Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗Copy linkHealth claims not authorized for foods in conventional food form or for dietary supplements of vitamins, minerals, herbs, or other similar substances:(a)Dietary fiber and cardiovascular disease.(b)Zinc and immune function in the elderly.