http://news.bbc.co.uk/1/hi/health/6397001.stm
Some points in this are highly annoying such as; "Patients with severe lactose intolerance can usually eat yogurt, hard cheeses and lactose-reduced milk and all are encouraged to eat these as a source of calcium and other nutrients."
but it does prove some points that humans were not able to drink it until a few thousand years ago!
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