Just Keto Diet The soluble fibers in proactol are very thick and bind with the bile acids to slowdown the digestion and absorption of glucose. This thick liquid remains in the stomach for some time and makes us feel full for a longer time. So you will not be hungry as well. You cravings for food will be reduced to a great extent. Fat binding is believed to be a safe method for reducing obesity by getting rid of the excess fat before digestion. By binding and eliminating the fats from the body the proatol fat binders are very effective in bringing about weight reduction.