Dr. Chris Knobbe links the surge in chronic diseases—like obesity and diabetes—to the rise of seed oil consumption. From 1922–1987, obesity rose 600% while seed oil intake jumped from 78 to 497 calories/day. Seed oils damage metabolism, promote inflammation, and are nutrient-poor. Once used as machine oil, they now make up ⅓ of U.S. calories. To avoid them: skip packaged foods, eat whole foods, and cook with healthy fats like butter or olive oil.

Many avoid fermented foods on low-carb diets due to carb concerns, but properly fermented foods are low in carbs and rich in probiotics. Fermentation reduces sugars and supports digestion, immunity, and gut health. Unlike pickling, fermentation enhances food with beneficial microbes. Low-carb options include yogurt, kefir, kimchi, cheese, and more—especially when fermented longer for reduced carbs and increased sourness.