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Originally Posted by sentient
These traditional peoples don't have lactose intolerance issues?
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High frequency of lactose intolerance in a prehistoric hunter-gatherer population in Northern Europe
Background
Genes and culture are believed to interact, but it has been difficult to find direct evidence for the process. One candidate example that has been put forward is lactase persistence in adulthood, i.e. the ability to continue digesting the milk sugar lactose after childhood, facilitating the consumption of raw milk. This genetic trait is believed to have evolved within a short time period and to be related with the emergence of sedentary agriculture.
Results
Here we investigate the frequency of an allele (-13910*T) associated with lactase persistence in a Neolithic Scandinavian population. From the 14 individuals originally examined, 10 yielded reliable results. We find that the T allele frequency was very low (5%) in this Middle Neolithic hunter-gatherer population, and that the frequency is dramatically different from the extant Swedish population (74%).
Conclusions
We conclude that this difference in frequency could not have arisen by genetic drift and is either due to selection or, more likely, replacement of hunter-gatherer populations by sedentary agriculturalists.
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"An estimated 74-79 percent of American Indian adults have lactose intolerance. Yet, the Dietary Guidelines advises that everyone eat two or three servings of dairy foods."
Your area
ImthatIm says:
“77% of participants reported having no known food allergies. 14% of respondents reported being lactose intolerant.
Increasing lactose intolerance among tribal members can be a challenge for tribal cooks”.
Maybe it is not an increase in lactose intolerance, but rather increase in an awareness of the issue.
https://www.youtube.com/watch?v=4-fiJCfGm10
Heh:
https://www.youtube.com/watch?v=9knGW8IuLlk
Also when one doesn't have the enzimes for all this Western grain and vegetarian diet, you just become increasingly more fatiqued and start to have deficiences even without the actual allergies or intolerances.
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