food intolerance network - Prevalence of lactose intolerance
►http://bit.ly/eH9wnb
Cultural factors also play a role. 80% of the Japanese population, for example - mostly upper class – are able to digest lactose. Many of those who originate from populations that are normally lactose intolerant, but have grown up in a society where drinking milk is normal, will no longer be affected by lactose intolerance. This implies that cultural conditions can also determine lactose intolerance.
African Adaptation to Digesting Milk Is “Strongest Signal of Selection Ever”
►http://bit.ly/gWilRQ
Did Lactose Tolerance First Evolve in Central, Rather Than Northern Europe? ►http://bit.ly/n89YU
Scientists Uncover Genetic Basis for Lactose Intolerance ►http://bit.ly/goGTcy