What Is

Psyllium husk is a soluble fiber supplement with proven benefits for digestion, cholesterol, and blood sugar. Learn what it is, how it works, and how to use it safely.

A recipe says a teaspoon, your dosage guide says five grams, the tub says a rounded scoop. Those aren't the same amount, and the gap matters.

The question has a technically boring answer and an interesting one. Psyllium's own GI is effectively zero; its effect on a meal's GI has been measured directly.

From arid-land folk remedy to one of nutrition science's most-studied fibers. The real timeline, the etymology, and the honest footnotes most histories skip.

A gel the body can't digest or ferment away, rearranging digestion at every stop. The real mechanism — including the colon story almost everyone tells wrong.

Solubility alone predicts almost nothing — gel formation and fermentability do the real work. The fiber taxonomy that actually explains psyllium's effects.

Same plant, same fiber, different particle size — and that changes everything in the kitchen. How to convert between them and which to buy for what you make.