A curious and paradoxical intolerance for lactose across the South Asian subcontinent could help explain why the ability for adults to consume fresh milk from other animals developed in other populations.
Researchers from the University of California, Berkeley, led a team of scientists in a genome-wide study of people across the Asian subcontinent to better understand how and why the ability to digest the sugar common in dairy products spread.
Despite being the world's biggest producers and consumers of dairy, most adults in India, Pakistan, and Bangladesh do not produce enough lactase, an e