Robert Lustig on the Grocery Basket Rule: recommends

Dr. Robert Lustig recommends a practical “grocery basket rule”: roughly 60% whole foods, 20% minimally processed foods, 15% processed foods, and 5% ultra-processed foods. He presents it as a realistic system for everyday shopping rather than an abstinence doctrine.

His stated reasoning is that consistency matters more than perfection — a small allowance for ultra-processed food makes the pattern sustainable while keeping the bulk of intake metabolically sound. He set out the rule in a September 2026 interview on practical dietary habits.

This page chronicles a stated position of the person above. It is not medical advice and not the site's own conclusion.