In the southern island of Japan, there is a group of Japanese known as Okinawa. People who are known for their youthful complexion and who are not looking for their age. So what's their secret to this fountain of youth? The secret is supposed to be this diet. They eat root vegetables rich in starch as part of their diet, and one of these basic vegetables is sweet potato.
Sweet potatoes and other root vegetables rich in starch are anti-aging superstars. For years, nutritionists have advised us to fill the plates with a variety of vegetable colors – not just the green variety. Conventional potatoes do not give the same shot. Sweet potato provides sugar, but unlike sweetmeats, it provides a long-lasting source of slow-release carbohydrates, essential to our energy and vitality.
In fact, a recent study in China showed how purple sweet potato contains a naturally occurring anthocyanin (an extremely potent antioxidant with neuroprotective effects). The potato is also rich in vitamin A in the form of beta-carotene. This element is essential to prevent rough and flaky skin. It also helps protect the skin from sun damage, balances pH levels and promotes a softer complexion. The levels of antioxidants found in potatoes are so high that they are excellent for cancer prevention. So, if one of your loved ones is a smoker, give him some sweet potatoes!
Another reason you would want to include sweet potatoes in your diet is for its high levels of hyaluronic acid. As you get older, these acid levels drop. Our bodies depend on it to keep our skin hydrated and the joints in our body lubricated. It also helps to maintain collagen levels in our skin without causing bovine collagen injections.