Q: In this task, you are given a question and a context passage. You have to answer the question based on the given passage.
Where is lactose intolerance more common, peoples of east Asian descent or people of northern European descent?, Context: Lactase is an enzyme that breaks down the disaccharide lactose to its component parts, glucose and galactose. Glucose and galactose can be absorbed by the small intestine. Approximately 65 percent of the adult population produce only small amounts of lactase and are unable to eat unfermented milk-based foods. This is commonly known as lactose intolerance. Lactose intolerance varies widely by ethnic heritage; more than 90 percent of peoples of east Asian descent are lactose intolerant, in contrast to about 5 percent of people of northern European descent.
A:
peoples of east Asian descent