Sweet potatoes contain large amounts of fiber and potassium. They also provide high nutritional values of vitamin C, as well as 400 percent of a person's daily requirement of vitamin A, according to Medical News Today.
The natural sugars contained in sweet potatoes are low on the glycemic index, meaning they affect blood sugar levels slowly. This makes them a good choice for diabetics who want something sweet without the risk of increasing their glucose levels.
Sweet potatoes should not be confused with yams. While similar, yams are not indigenous to North America. They also don't contain the same high values of nutrition as sweet potatoes.