White potatoes (Solanum tuberosum) and sweet potatoes (Ipomoea batatas) are both nutritious foods and we have not identified studies directly comparing their impacts on health. White potatoes and sweet potatoes have a similar calorie density and carbohydrate content. White potatoes have a bit more protein, while sweet potatoes have a bit more fiber. Sweet potatoes contain more of several vitamins and minerals, including vitamin A precursors, vitamin C, and calcium, while white potatoes contain more folate.[1][2]
White potatoes and sweet potatoes both tend to have a high glycemic index, but the glycemic index of white potatoes is typically somewhat higher.[3]