The information contained in the report is curated from peer-reviewed studies, and based on the number of risk variants present in your DNA raw data file, the genetic risk of a particular condition is indicated as likely low, medium, or high. For lactose intolerance, we analyze the variants of LCT and MCM6 genes. People carrying a specific variant of these genes may tend to display the symptoms of lactose intolerance.
However, the symptoms can be triggered by other factors like irritable bowel syndrome, lesser-known genetic factors or it could be a reaction to casein in milk.