Functional Foods: Benefits, Concerns and Challenges—A Position Paper from the American Council on Science and Health

Summary

This position paper from the American Council on Science and Health provides a comprehensive review of functional foods—whole or enhanced foods claimed to provide health benefits beyond basic nutrition. The authors establish that credible functional food claims should be grounded in replicated, randomised, placebo-controlled human intervention trials, and categorise marketed functional foods by the strength of evidence supporting them. The paper emphasises that many functional foods currently marketed lack sufficient scientific support for their health claims, and cautions that functional foods are not substitutes for healthy lifestyle habits.

Regional applicability

Although conducted in a United States context, the paper's evidence standards and categorisation framework are applicable to United Kingdom regulatory and consumer contexts. The underlying scientific principles for substantiating functional food claims align with European and UK approaches to food health claims regulation, though specific product categories and marketing practices may differ between markets.

Key measures

Categorisation of functional foods by evidence type and strength; assessment of alignment between market claims and scientific evidence; recommended intake levels

Outcomes reported

The paper categorizes functional foods by type and strength of scientific evidence supporting health claims, and evaluates whether marketed functional foods have sufficient evidence to substantiate their claims. It establishes standards for evidence evaluation and identifies gaps between market claims and scientific support.

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