What are the signs and symptoms of lactose intolerance?

Similar to other food intolerances, the onset and severity of symptoms is related to dose, frequency of lactose ingested and the individual’s capacity to digest it.1 Clinical symptoms may appear between 1-3 hours after consumption, however, this has been reported to be highly variable among individuals.5 Examples of typical symptoms experienced by people with lactose intolerance include abdominal pain, flatulence, bloating, diarrhea and vomiting.1