Many people think white potatoes are void of nutrition while sweet potatoes are chalked full. Both types of potatoes are actually very similar in terms of calories, carbohydrates, fiber, protein, fat, and nutrient content with only a couple key differences.
Sweet potatoes provide a large dose of Vitamin A that white potatoes completely lack. However, both potatoes compare similarly in other nutrients they provide such as, the B vitamins, magnesium, potassium, phosphorus, iron, copper, and manganese. In fact, white potatoes offer higher doses of most of those nutrients when compared to sweet potatoes.
Sweet potatoes are an excellent source of Vitamin A which is important for eyesight. Both sweet and white potatoes are excellent sources of Vitamin C, however sweet potatoes do offer a higher dose.
So, which to pick? I recommend choosing both. Switch it up from time to time to get the full variety of nutrients each potato has to offer.