A new study has revealed that not all carbohydrates are equal in terms of nutritional value, implying that choosing rice over potatoes may leave you lacking in valuable nutrients. A detailed comparison of the nutritional elements in typical American meals showed that replacing portions of bread and rice with potatoes twice a day could increase potassium levels by 21%, vitamin C by 11%, and fiber by 10%, potentially reducing the risk of colon cancer. Nutrition expert Dr. Keith T. Ayoub explained that carbohydrates are not interchangeable and have completely different profiles of vitamins and nutrients. Dr. Ayoub and his colleagues compared the amounts of potassium, vitamins B6 and C, and fiber in a medium-sized potato with white rice and whole wheat bread, as reported by the British "Daily Mail." They then calculated the nutritional differences between the three types of carbohydrates in two typical meals and assessed the overall daily differences. In addition to deficits in potassium and fiber in rice and potato meals, researchers also noted a 17% decrease in vitamin B6, a nutrient also found in pork and poultry and essential for vascular health. The study's authors suggested moderation in potato consumption while incorporating some starchy vegetables into the diet, such as sweet potatoes.