Modern nutrition advice changes every decade — but human biology hasn’t. Across continents, climates, and thousands of years, the world’s healthiest cultures shared the same foundational foods. In this article, we explore the foods all thriving cultures had in common, why they worked so well with human physiology, and how modern diets drifted away from these principles — especially with the rise of ultra-processed foods and seed oils.

Canola oil is widely marketed as a heart-healthy fat, yet its origins as an industrial lubricant and extreme processing raise serious concerns. This evidence-based breakdown explores how canola oil is made, why it lowers LDL cholesterol, what early research actually found, and whether oxidation—not cholesterol alone—may be the real driver of cardiovascular and metabolic disease.

Whole30 recently announced that seed oils are now permitted in their program, claiming that “the science has changed.” This article takes a deep dive into the research Whole30 cited—and the science they left out. We examine why focusing only on LDL cholesterol and short-term inflammation markers misses the bigger picture, how linoleic acid and oxidized fats behave in the human body, and why long-term exposure to seed oils may carry metabolic and cardiovascular risks that deserve serious consideration.