Psyllium is a form of fiber which has many benefits to the human body, from your heart to your pancreas. Psyllium is a bulk-forming laxative, which means it soaks up water in your gut and makes bowel movements much easier. While it helps promote regularity, it doesn't promote flatulence, which is good for everyone within smelling distance. While it can be used as a one-off to ease constipation, adding psyllium to your diet can help promote regularity and overall digestive health.