75% of the world population is lactose intolerant. Tolerance is only
"widespread" among populations with Northern European ancestry
So, tolerance is still the less common condition by far.
Also, lactose tolerance is not the only issue. Milk is specifically
On Sep 3, 2011, at 7:28 AM, Joshua Katz wrote:
> I know, that's a provocative subject heading. But then, I have a
> provocative question. What's wrong with dairy from an evolutionary
> perspective? Yes, the answer seems obvious. But hear me out. No
> other species drinks the milk of another animal, no other species
> produces enzymes for lactose in adulthood. Yet, at some point,
> people started drinking milk, probably out of starvation. Today, we
> see that the gene for adult production of lactase is widespread - we
> consider our kids 'sick' if they are lactose intolerant. We make
> cial products for those so 'afflicted.' So, why did this ability go
> from almost non-existent to widespread? Doesn't this suggest that
> those who could digest milk had an advantage over others? In turn,
> doesn't that mean an evolution-based approach to nutrition should
> see milk (raw milk, at least) and fermented dairy products as ideal
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