Most people are born with the ability to digest lactose, the major carbohydrate in milk and the main source of nutrition until weaning. Approximately 75% of the world's population loses this ability at some point, while others can digest lactose into adulthood. This review discusses the lactase-persistence alleles that have arisen in different populations around the world, diagnosis of lactose intolerance, and its symptomatology and management.
No takes yet. Share an insight, caveat, or question.
Mattar et al. (2012) studied this question.
Synapse has enriched 5 related papers. Consider them for comparative context: