What is a key characteristic of the Dean Ornish diet?

The Dean Ornish diet is characterized by its emphasis on low fat intake. This approach is primarily designed to promote heart health and is grounded in the principles of reducing the risk of cardiovascular diseases. The diet encourages the consumption of whole, plant-based foods while significantly limiting the intake of saturated fats. It incorporates a wide variety of fruits, vegetables, whole grains, and legumes, and it is often accompanied by healthy lifestyle modifications, including exercise and stress management.

While it may include low levels of animal products, the focus is not strictly on a vegan diet nor does it require high protein or a high carbohydrate intake in the context that would represent a high-calorie diet. The low fat characteristic is essential, as studies have shown that reducing fat intake can improve cholesterol levels and overall heart health. This is foundational to the Ornish diet's philosophy, distinguishing it from other dietary approaches that may emphasize different macronutrient balances.