CooperAerobics states that psylium husks contain 70 percent soluble fiber. Since one tablespoon equals about 5 grams, one tablespoon of psyllium husks contains about 3.5 grams soluble fiber. The National Institutes of Health recommend psyllium husks as an effective method for easing constipation and lowering cholesterol.
Psyllium husks, when combined with water, form a gentle bulk laxative, according to the University of Maryland Medical Center. The resulting gelatin-like substance forms a large mass and regulates the movement of the bowels by stimulating them to move in those with constipation while slowing down the movement in those with diarrhea. Studies show that psyllium husks also play a role in lowering blood sugar in diabetics. Some medications interact with psyllium husks, so consult a pharmacist or doctor before taking it. Consult the packaging of the psyllium husk product for correct dosage information.