The Rainbow Diet aims to improve health and support weight loss by eating a variety of colorful fruits and vegetables each day. Unlike strict diets, it does not forbid any foods but encourages eating mostly low-calorie, high-nutrient options from each color group. Each color provides different antioxidants and nutrients - for example, reds contain lycopene and anthocyanins for heart and skin health while greens have chlorophyll for liver and kidney function. Following the Rainbow Diet can strengthen immunity, reduce cancer and diabetes risk, and aid digestion, circulation, and brain function through its diverse antioxidant and nutrient intake. While a healthy way to eat, it also requires portion control and exercise for effective weight loss.