Robert Lustig on Cooking with Seed Oils at High Heat: warns against

Dr. Robert Lustig warns against cooking with polyunsaturated seed oils at very high heat. His stated reasoning: high heat can flip the double bonds in polyunsaturated oils, creating trans-like configurations — effectively recreating the structural problem he attributes to trans fats. This is Lustig’s stated position, not an established safety finding.

He pairs this warning with his recommendation of extra virgin olive oil used below its smoke point (see “Robert Lustig on Extra Virgin Olive Oil: recommends”), framing the issue as one of heat damage to fats rather than of any single oil being categorically good or bad.

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