Chris Kresser: Partially hydrolyzed guar gum is a soluble fiber, and potato starch is a resistant starch, so those are different classes of fibers. Remember, we have three. We have non-starch polysaccharides, we have soluble fiber, and we have resistant starch. Potato starch is still definitely useful as a resistant starch. Partially hydrolyzed guar gum is a soluble fiber, so it’s a different category, and I’ve found that partially hydrolyzed guar gum is probably the best tolerated of all of the supplemental fibers, maybe that and glucomannan, but the difference between partially hydrolyzed guar gum, or PHGG, compared to glucomannan— and any other soluble fiber that I know if—is it doesn’t form a gel. It doesn’t kind of expand in water and form a gel-like substance, so it mixes clear with water. If you mix it in a glass of water, if you mix it up enough, it just looks like plain water, and it feels like plain water in the mouth. It doesn’t cause bloating like some soluble fibers do or other fibers, and patient compliance is very high because it’s easy to drink and easy to mix with food or other beverages without affecting their taste or mouthfeel. There’s room for different ones in different situations. A lot of times patients with pretty significant gut issues don’t do well with resistant starch, so they can have pretty serious reaction to it, so you want to make sure you start really slowly with a really small dose, like a quarter of a teaspoon a day, if you do use the potato starch.