Over two-thirds of the world’s population lose the ability to metabolise during their lifetime (the majority during childhood). We know today that lactose intolerance, or lactase persistence, has a strong genetic predisposition. Almost 100% of Asians, 70% of African-Americans, East Indians, US Hispanics and approximately 50% of Spanish and French have very low levels of lactase in adulthood (what we would call lactose intolerant). Alternatively, the majority of Caucasians can tolerate lactose into adulthood.

Testing for lactose intolerance/lactase persistence can be done either via chemical or genetic testing. Each has their advantages and disadvantages but is important for any doctor or patient to know about.

This is the story of Lactose intolerance.

Our special guests:

Dr Michael Page is a Chemical Pathologist and Chief Executive Officer at Clinipath in Western Australia.

Dr Melanie Galea is a Genetic Pathology specialist and Director of genetics at Douglass Hanly Moir Pathology in Sydney.