Vitamin C. Running is known to increase oxidative stress and free radicals, which over time can lead to damaged cells, tissues, and organs. Vitamin C, a powerful antioxidant, naturally fights against oxidative stress and the free radicals it creates. While Vitamin C might not prevent your next cold, it has been found to shorten the duration. And while you may have taken supplements in the past, most experts agree it’s best to get this antioxidant from real food. Which sweet potatoes are one of the best sources.
Orange-fleshed sweet potatoes may be one of nature’s unsurpassed sources of beta-carotene. Several recent studies have shown the superior ability of sweet potatoes to raise our blood levels of vitamin A.
Storage proteins in sweet potato also have important antioxidant properties. These storage proteins—called Sporamin—get produced by sweet potato plants whenever the plants are subjected to physical damage. Their ability to help the plants heal from this damage is significantly related to their role as antioxidants. Especially when sweet potato is being digested inside of our gastrointestinal tract, we may get some of these same antioxidant benefits.