Do not demonize seed oils, which do not promote inflammation and support longevity compared to butter, and avoid using fake allergy cards at restaurants in order to protect people with real intolerances.

noli's read

Research largely supports the idea that seed oils do not increase inflammation, as demonstrated by a meta-analysis of randomized controlled trials (RCTs) by Su et al. (2017) showing that linoleic acid does not elevate inflammatory markers. The claim of a 17% gain in longevity by replacing butter with vegetable oils comes from a large observational study (cohort) from Harvard University conducted by Yu Zhang and published in JAMA Internal Medicine (2025). Although this figure is impressive, it is observational evidence, which invites nuance because people who consume more vegetable oils often share other very healthy lifestyle habits. However, substituting saturated fats with unsaturated vegetable fats remains a golden rule validated by broad consensus for preserving our overall vitality. Finally, Abbey Sharp's warning regarding the use of fake restriction cards is a matter of expert opinion and common sense, essential for maintaining restaurant vigilance in the face of real, severe sensitivities.

the sources

No named source held this one up — that absence is part of the verdict.