The Ornish Diet is a plant-based eating plan developed by Dr. Dean Ornish. It emphasizes whole foods, including fruits, vegetables, whole grains, and legumes, while minimizing or eliminating animal products and processed foods. The diet is low in fat, particularly saturated fat, and encourages healthy lifestyle changes, such as regular exercise and stress management. This diet is often used for weight loss and improving heart health. Research suggests that following the Ornish Diet can lead to significant reductions in cholesterol levels and may even reverse heart disease. It promotes a holistic approach to health, focusing on diet, exercise, and emotional well-being.