You will most likely want to know what is lactose intolerance when you are actually going to be hit by it. As a definition we can say that it is an inability of the human body to process lactose. The main thing that should be discussed is not what it is but why it happens. When we are born we can tolerate and digest it properly. As time passes the human body loses this capability.

That is why lactose intolerance appears. The problem is that there is not much that can be done and we will have to live with this situation. The good news is that we can easily avoid consuming products that include this sugar. Just avoid milk and look at the ingredients list when you are buying packaged foods as the sugar is also commonly used due to the great relationship it has with aromas while acting as a stabilizer.