| Of these, how many have been seen by a gastroenterologist before being labelled, and how many have had lactose intolerance excluded? |
| Adults from Eastern countries have, for genetic reasons, much lower levels of lactase, and so lactose intolerance, rather than milk intolerance is really the normal state. |
| Others suffer from lactose intolerance or have to keep away from gluten at all costs. |
| Individuals deficient in lactase cannot metabolize lactose, a condition called lactose intolerance. |
| But one in five babies can have problems with milk in the first six months of their lives, either lactose intolerance or an allergy to proteins. |
| In populations where drinking cows' milk is not the done thing, lactose intolerance is still the norm. |
