I have posted on the health benefits of sweet potatoes previously, but, I think good information bears expanding. Here is a very useful infographic.
Here are a couple of highlights, but click on this link for the entire spread.
In addition, WebMD has an informative spread on them, too. Under the heading Antioxidants Aplenty it offers: “Not all sweet potatoes are orange. Their skins and insides can be white, yellow, brown, red, pink, and purple. The range of color brings different nutrients to the table. Purple-fleshed sweet potatoes are thought to contain super-high levels of antioxidant and anti-inflammatory agents. As these substances pass through your system, they balance out free radicals — chemicals that harm your cells.”
Under the heading Healthy Prep Is Easy it says: “The way you cook your sweet potatoes can make a big difference in the nutrition you’ll get from the dish. One study measured how many carotenoids, like beta-carotene, stayed in the food afterward. The simplest method, oven baking, turned out to be the best.”