Dr. Mercola recommends psyllium fiber to add bulk to our diets. An analysis of Dr. Mercola's program reveals that it is alarmingly low of fiber and therefore can cause chronic constipation. This is why he sells fiber! Also the plant fibers are removed with his juicing methods which reduces fiber even more. Dr. Mercola should know that lots of natural soluble and insoluble fibers are essential for colon health and cholesterol reduction, as well as other reasons. I would love his personal comments on this issue in this forum or in one of his future newsletters.