Food Processing & Inflammation
topic
Ultra-processed food consumption (NOVA classification: industrial products containing ingredients not found in home kitchens, including emulsifiers, artificial colors, preservatives, hydrolyzed proteins, and synthetic flavor compounds) is independently associated with elevated systemic inflammation, gut microbiome disruption, increased all-cause mortality, and higher risks of cardiovascular disease, type 2 diabetes, cancer, and depression — with large cohort studies showing dose-dependent relationships between ultra-processed food consumption and inflammatory markers after controlling for macronutrient and caloric confounders.
Role
The NOVA food processing classification — which distinguishes between unprocessed, minimally processed, processed, and ultra-processed foods — is the most practically actionable framework in contemporary nutritional epidemiology, because it captures the aggregate effect of thousands of industrial additives and processing methods that individual nutrient analysis misses. The consistent finding that ultra-processed food consumption predicts adverse health outcomes even after adjustment for macronutrient and caloric content means that the food matrix and its industrial manipulations are independently harmful — making food processing level a dietary evaluation criterion of comparable importance to macronutrient composition.
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