Chris, what is the most underrated nutrient? So, glad you asked. I think fiber is the most underrated nutrient; on average, most Americans are horrible at getting enough in their diet. When I talk about fiber, I don't mean the day-old bran muffin you accidentally grabbed at Starbucks. Sorry, that happened to you; blueberry muffins … Continue reading The Fiber guide: How to get more fiber and 30 high fiber foods to try