White potatoes have a rich nutritional profile, with plenty of beneficial nutrients. One potato may contain up to 30% of your daily immune-boosting vitamin C. They also contain potassium, which is thought to help your muscle function, and it also helps regulate blood pressure. You will also find that potatoes contain vitamin B6, iron, and a trace amount of calcium. As long as you prepare your potatoes in a nutritious way, your body will greatly benefit from this root vegetable.