A Stanford trial found arabinoxylan fiber cuts LDL cholesterol dramatically, but inulin has no effect. Some people see big drops, others see nothing or even increases. Fiber's cholesterol impact depends on the type and on you.
Have you ever heard fiber lowers cholesterol? Well, it's a myth. Actually, it's a half-mith. A landmark randomized controlled trial, this one, conducted out of Stanford found that some fibers like arabinoxylan, which is found in psyllium husk, lowers LDL cholesterol dramatically. But others, like inulin, don't, at least at a population average. But even more interesting, people didn't respond the same to the same fibers. Some people saw drops in cholesterol, mostly with arabinoxylan, others saw nothing, and some even saw increases in LDL cholesterol after fiber supplementation. So the moral isn't fiber works, or fiber is good, or fiber is bad. It's that there's always another layer of nuance. And if you want the full breakdown, including where you can find specific fibers that are discussed in the paper, check out the deeper dive content.
