Lactose intolerance affects around 65% of the world’s populations, yet not all of those with this problem are aware of it. Symptoms are not always severe and can be easily looked away.
Lactose intolerance appears when the small intestine does not produce enough of the enzyme called lactase, used for digesting lactose. Lactase has the role of turning sugar in milk in glucose and galactose, which are later on absorbed in the intestine and make it into the bloodstream.
When not enough lactase is being produced, lactose makes it to the colon, where problems appear:
1. Bloating and gases – one of the most common symptoms for lactose intolerance
2. Diarrhea - the excess water in the small intestine due to undigested lactose
3. Cramps - many people suffering from lactose intolerance complain of abdominal cramps
4. Nausea - lactose intolerance might be a cause for nausea after consuming milk or milk products
5. Borborygmi - these are the noises made by the stomach or intestine during digestion. They can be more intense at people suffering from lactose intolerance.