Lactose intolerance - WikipediaLactose intolerance is caused by a lessened ability or a complete inability to digest lactose, a sugar found in dairy products.[1] Humans vary in the amount of lactose they can tolerate before symptoms develop.[1] Symptoms may include abdominal pain, bloating, diarrhea, flatulence, and nausea.[1] These symptoms typically start thirty minutes to two hours after eating or drinking something containi
