In recent years, the name of one relatively simple dietary fiber has repeatedly resurfaced. It has been sitting on shelves for many years, but is now enjoying renewed popularity. This is psyllium, a fiber derived from the seeds of the Plantago ovata plant, considered one of the most common fiber supplements in the world.Many people know it mainly as a supplement that helps relieve constipation, but recent studies indicate that its effect is broader and also includes possible benefits for heart