Western Diet

The Western Diet, also known as the Standard American Diet (SAD), is a modern dietary pattern characterized by high intakes of refined grains, added sugars, salt, and unhealthy fats, alongside a high consumption of processed meats and high-fat dairy. This diet is notably deficient in fiber, vitamins, minerals, and health-promoting phytonutrients found in whole fruits and vegetables. It represents a significant departure from the ancestral diets to which human physiology is evolutionarily adapted.

This dietary pattern is a primary driver of chronic metabolic diseases, including obesity, type 2 diabetes, and cardiovascular disease. The high caloric density and low nutrient density of the Western Diet promote a state of chronic low-grade inflammation and oxidative stress. Transitioning away from the Western Diet toward a whole-food, nutrient-dense, and anti-inflammatory eating pattern is essential for anyone seeking to reverse metabolic damage and achieve long-term wellness.

📄 Cite This Definition
Clark, R. (2026). Western Diet. In *CFP Weight Loss glossary*. https://glossary.cfpweightloss.com/western-diet
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