An intriguing little detail in all this frothy commerce is that many people in China, like much of Asia, are lactose intolerant. Human children produce an enzyme that allows them to digest milk, but in much of the world, its levels taper off as they grow up.[size= 16px]People of European descent are somewhat unusual in that they mostly continue to digest dairy effortlessly as adults. In China, a much-cited study estimated that 92% of adults had trouble absorbing lactose; more recently, China’s preventative medicine agency suggested that by the time kids are 11 to 13 years old, around 40% have lost the ability to digest it.[/size]

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