Constipation and improper elimination seem to be at an all-time high in many societies today. As a result, people looking for natural solutions may turn to ongoing magnesium supplementation; foods known to move the bowels, such as prunes; and herbs, such as cascara and senna. There are some potential harmful effects of using cascara and senna on an ongoing basis, as they do not address the cause of constipation. Considered "natural laxatives," they can create dependence and disrupt peristalsis (the natural contractions of the bowel).