Lactose is the sugar found in milk .Because lactose is not digested properly in the small intestine of individuals who are lactose intolerant; it passes whole into the large intestine or colon. Upon reaching the colon it is broken down by the normal colon bacteria. This breakdown results in the production of carbon dioxide and hydrogen gases. The gas production can lead to (Abdominal distension, excess gas and diarrhea, watery and explosive bowel movements, urgency). The severity of symptoms is usually proportional to the amount of the milk sugar ingested with more symptoms following a meal with higher milk sugar content. (Marsha, 2012).