Seen frequently on grocery items, and especially on dietary supplements, structure/function claims describe the role of a nutrient or ingredient in the structure or function of the human body. Examples include “Calcium builds strong bones,” “St. John’s Wort supports mood,” and “Vitamin E supports the immune system.”
The FDA defines and regulates structure/function claims, and FDA requirements generally preempt state-law requirements that are “not identical.” 21 U.S.C. § 343-1(a)(5). So, does compliance with FDA regulations for structure/function claims shield food and supplement manufacturers from lawsuits claiming their structure/function claims are false and misleading?