Grass-fed beef needs a verifiable specification instead of a blanket sustainability claim

Grass-fed beef cannot be assessed reliably through a single sustainability promise. A systematic review published on November 4 brought together 141 studies and concludes that the available evidence remains too heterogeneous to confirm the sustainability of such systems in general terms. The value of the paper lies in linking meat quality, economics, environmental performance, animal welfare, traceability, and certification.

At product level, the review identifies potential advantages: leaner carcasses, higher proportions of omega-3 fatty acids and conjugated linoleic acid, and higher antioxidant levels. At the same time, it identifies possible commercial constraints, including darker colour and variable tenderness. This is not a verdict on every pasture-based product; it is a warning against generalising findings from highly different systems, regions, and protocols.

The environmental dimension also requires precision. Reduced grain inputs and greater pasture biodiversity may deliver benefits. However, methane emissions and higher land requirements may offset them unless adaptive grazing and robust carbon accounting are in place. Welfare is not automatic either: grazing can support natural behaviour, but it also exposes animals to adverse weather, parasites, and forage variability.