They're rich in vitamin C, which is an antioxidant. Potatoes were a life-saving food source in early times because the vitamin C prevented scurvy. Another major nutrient in potatoes is potassium, an electrolyte which aids in the workings of our heart, muscles, and nervous system Yes, it is safe to consume potatoes every day as long as you cook them without much salt or saturated fats. One medium-size potato can be part of a healthy diet. It doesn't increase cardiometabolic risk and the chances of having diabetes and heart disease