Health-Promoting Phytonutrients Are Higher in Grass-Fed Meat and Milk

Summary

This narrative review synthesises emerging evidence that grass-fed meat and milk accumulate bioactive phytonutrients—including terpenoids, phenols, carotenoids, and anti-oxidants—at concentrations comparable to those in plant foods with documented anti-inflammatory, anti-carcinogenic, and cardioprotective properties. The authors argue that these phytochemicals have been substantially underappreciated in nutritional comparisons between production systems, which have historically focused on fatty acid profiles. The review posits that plant-species-diverse pasture grazing further concentrates phytochemical diversity and abundance, with potential implications for both animal and human health.

Regional applicability

The review is not geographically anchored to a specific country and discusses universal principles of pasture-based livestock production. The findings are applicable to United Kingdom farming systems where grass-fed and pasture-based livestock production are practised, though the review's conclusions would require validation through UK-specific compositional and human health studies.

Key measures

Phytochemical concentration (terpenoids, phenols, carotenoids, anti-oxidants); anti-oxidant activity; phytochemical comparison between grass-fed, monoculture-grazed, and grain-fed meat and milk

Outcomes reported

The study reviews evidence that grass-fed meat and milk contain higher concentrations of health-promoting phytonutrients (terpenoids, phenols, carotenoids, anti-oxidants) compared to grain-fed products. It examines how plant-species-diverse pastures further enhance phytochemical richness and potential human health benefits.

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