There are two types of fiber: insoluble and soluble. Insoluble is like nature’s broom. We don’t digest it, and it carries toxins with it as it exits our bodies. Soluble fiber absorbs water and helps to normalize digestion. It can also act as a prebiotic, which means it feeds the good bacteria in our gut. I like soluble guar fiber, available over the counter as Sunfiber, because it has been shown in more than 120 clinical studies to support digestive health without the uncomfortable side effects. It also triggers the release of satiation-inducing hormones, so you may not feel as hungry.