Fiber is a critical nutrient needed to keep our bodies healthy. Not only does it keep the digestive tract healthy but it binds to toxins in the body so they are excreted efficiently. I think we all know that we need to eat fiber, but did you know the average American only eats 15 grams of fiber a day? (Source: WebMD) That is not nearly enough for our bodies to remain healthy. For every meal, we need to eat at least 8-12 grams. While that sounds like a lot of fiber, it can be achieved by increasing the amount of fruits, legumes and vegetables you eat daily.