Functional Foods From Millets: Nutritional Composition and Health Claims

Abstract

Millets, a group of small-seeded cereals grown mainly in dry regions of Africa and Asia, are increasingly described as functional foods, and statements about their nutrient content, antioxidant activity and benefit in diabetes or heart disease now circulate widely in advisory and commercial material. This narrative review asks how much of that language the published literature actually supports. It draws on work on the composition of pearl, finger, foxtail, proso, kodo and related millets, on their phenolic compounds, starch and fibre, on anti-nutritional factors and traditional processing, and on the wider evidence for whole grains, and it reports no new data. Millets are best described as nutrient-dense staples with distinctive phenolic and mineral profiles whose composition varies with species, variety and milling. Most evidence for specific health effects comes from laboratory assays and animal experiments, while controlled human studies of millets themselves are few, so claims are often borrowed from whole grains in general. Goitrogenic flavones and mineral-binding phytate are real but manageable concerns, and processing changes the picture in both directions. The review concludes that millets are a sound and under-used part of a varied diet, that large health claims are not yet established, and it sets out the kind of study that would settle the main questions.