Introduction: Enzymes are essential for the proper functioning of the human body. Enzymes are catalysts that cause reactions. The two main classes of enzymes necessary to maintain vital functions are digestive and metabolic enzymes. The main digestive enzymes are classified into proteases, amylases and lipases. These enzymes can help break down food molecules. Metabolic enzymes are responsible for the repair and patterning of each cell. Inadequate production of digestive enzymes can negatively impact the breakdown of food into various nutrients our bodies need. Problems associated with celiac disease and lactose intolerance “Celiac disease is an inflammatory disease of the upper small intestine caused by gluten intolerance. The small intestine has an inner lining made up of cells that contain villi (marks). The substance known as gluten damages the villi lining the small intestine. When the villi are damaged or inflamed, they are unable to absorb water and other essential nutrients. These nutrients may contain substances such as iron, calcium, vitamins and folic acid. Healthy and damaged villi can be seen in Figure 1. Healthy villi are able to absorb the essential nutrients they need to function effectively. The inflammation caused in people with celiac disease destroys their villi, causing compression of the inner lining of the small intestine (Marques). Due to the damaged lining of the small intestine, digestive enzymes essential for the complete breakdown of various foods cannot be produced. This can cause malnutrition. Therefore, food remains unabsorbed in the digestive tract, as it is fermented by bacteria. This causes bloating and va...... middle of paper ......actions. 2005. Internet. October 18, 2010. Ehrlich, Steven D. “Lipase.” University of Maryland Medical Center. June 6, 2009. the web. October 18, 2010. “ENZYMES Help with digestion. » INFORMATION ON NATURAL THERAPY Energy healing Alternative therapies Health Well-being Liquid zeolite. 2006. Internet. October 18, 2010. “Lactase Information.” Diet and health.net. Internet. October 18, 2010. .Jackson, Frank W. “Lactose Intolerance.” Jackson Siegelbaum gastroenterology. 2008. Internet. October 18, 2010. “Lactose intolerance.” Continuing Education: CEU Contact Hours for Nursing. Continuing education of nurses. Internet. October 18. 2010.