Answers are grounded in this paper and cite their sources.
Richard J. Head, Ph.D, Ian R. Record, Ph.D, Roger A. King, B.App; Functional Foods: Approaches to Definition and Substantiation, Nutrition Reviews, Volume 54, I
No takes yet. Share an insight, caveat, or question.
Head et al. (2009) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: