Many people who lacks an enzyme that is needed to process sugar in milk is put into a category called lactose intolerant. Up to 50 million Americans may have the condition. Ethnic groups in the United States that are susceptible to the condition include African-Americans, Asians, and American Indians. After consuming dairy products, many lactose intolerants could experience conditions including bloating, gas, cramping in the abdomen, diarrhea and nausea. Medical experts use blood tests, breath tests, or even stool testing to diagnose the condition. Many over the counter remedies containing deficient lactase enzyme can fix the problem. Another way to fix the problem is to consume small amount of dairy at a time. Keeping your colon cleansed may help to avoid some of the symptoms such as bloating and nausea. When choosing a supplement to cleanse your colon, make sure to use a product such as Coleanse made of all natural ingredients to avoid harmful effects.