Sweet potato has twice as much calories than potato. However, sweet potato is a low-GI food; low-GI foods help your diet by causing a steady rise in the level of glucose in the blood, which in turn leads to a lower rice in insulin. To lower the GI level further, try steaming it instead of baking or frying.
As you can guess from its name, sweet potatoes are sweet. However, it is okay to eat some sweet potatoes even if you are a diabetic person, because level of glucose rise is low and gentle compared to other carbs. Full of fiber, folate, and rutin, sweet potato also prevent atherosclerosis.
Making a puree with sweet potatoes allow you to utilize it easier. When it is still warm after steaming, peel the sweet potatoes and smash them is a bowl. Add milk and honey, mix well, and store in the freezer until used. You can simply spread the puree on bread to make a sweet potato sandwich. Mixing the puree with some warm milk makes sweet potato latte.
Original document available from http://www.koreadaily.com/news/read.asp?page=2&branch=NEWS&source=&category=lifenleisure.general&art_id=3977773
Translated by Heewon Kim