Do you constantly feel bloated, have stomachache, diarrhea, feel flatulent after consuming dairy products? You could be lactose intolerant. Lactose is a type of sugar found naturally in the milk. An enzyme known as lactase is responsible for breaking down lactose for digestion. However, as we grow 70% of the people stop producing enough lactase thus causing lactose intolerance. It is advisable to consult a doctor before completely removing dairy products from the diet.