Kale is rich in betacarotene as well as lutein, and other vitamins and minerals.
Kale is rightly called a superfood and is rich in betacarotene as well as lutein, and other vitamins and minerals. Dietary lutein has been shown to cause a significantly enhanced cell-mediated and humoral immune response in dogs. It’s also been shown to enhance the antibody response of dogs given routine vaccinations.