User: What are the nutritional differences between white potatoes and sweet potatoes?
Assistant: Ah yes, this is an interesting question!  The main difference between white potatoes and sweet potatoes is the level of carbohydrates contained in the potatoes.  Sweet potatoes generally contain much higher levels of carbohydrates, whereas white potatoes are mostly comprised of starch.  White potatoes also contain much lower levels of vitamins and minerals.  Sweet potatoes are generally very nutritious however, containing healthy doses of vitamins A, C, and B6, as well as iron and antioxidant phytochemicals.  Sweet potatoes also contain a very healthy amount of fiber, making them a particularly effective food for stabilizing blood sugar levels and promoting healthy digestion.  White potatoes, on the other hand, are often associated with many health problems due to their high starch content and lack of nutrients.  Overall sweet potatoes are much healthier than white potatoes, and for this reason I would recommend eating sweet potatoes over white potatoes whenever possible!  

Hope this helps!  Good luck!