It's also full of nutrients like vitamin C, vitamin K, vitamin E, folate, and potassium. The fruits are replete with fiber, another nutrient that contributes to your health in a great way. Some research indicates the fruit’s ability to combat heart disease and diabetes. Kiwis are powerful sources of antioxidants that boost immunity and help prevent respiratory ailments like asthma. While the fiber promotes digestive health, the lutein and zeaxanthin in kiwifruits improve your vision.