Pectin is a soluble fiber found in plant cells used for culinary and medicinal purposes. In the cell, pectin acts as cement and holds the walls together. This quality makes it a prime resource for thickening foods such as jelly and jam.

Pectin slows down digestion which can be both good as well as potentially damaging. It helps the body slow down carbohydrate absorption and keeps glucose levels stable. However, too much pectin could cause constipation and prevent the body from absorbing the nutrients it needs.  Studies have been conducted to measure the effectiveness of pectin against colon cancer, but research is limited.