American Renaissance

Home       Previous Story       Next Story       View Comments       Post a Comment

Got Milk? Thank Your European Kin

Jennifer Harper, Washington Times, June 3

Can’t drink milk? Blame the cows, the genes and the ancestors rather than the gut.

After studying data from 270 African and Eurasian populations in 39 countries, Cornell University researchers have concluded that the ability to digest milk is hereditary, developing only among those whose distant relatives once tended dairy herds.

In America, the idea translates into numbers. The condition plays ethnic favorites: Up to 75 percent of blacks and American Indians, plus 90 percent of Asian-Americans are unable to digest lactose, a sugar in milk, according to the National Institutes of Health. Overall, 50 million Americans are considered lactose intolerant.

“This is a spectacular case of how cultural evolution — in this case, the domestication of cattle — has guided our biological evolution,” said Paul Sherman, a professor of neurobiology and behavior at Cornell. The findings will be published in upcoming issue of the journal Evolution and Human Behavior.

{snip}

Adults who trace their roots to the cow-friendly climes of Europe developed the ability to digest milk — they literally “passed on gene mutations that maintain lactase into adulthood,” the research notes.

{snip}

The researchers are mystified, though, by a dozen small groups in Africa and the Middle East who happily drank milk, though their neighbors could not.

“The most likely explanation is nomadism,” Mr. Sherman theorizes, noting that historically, the groups often kept small cattle herds and moved before some hidden disease pathogen could pose a threat to their cows.

{snip}

Original article

(Posted on June 3, 2005)

Top      Home      Previous story       Next Story       Post a Comment      Search

Comments


Top      Home      Previous story       Next Story      Search

Post a Comment

Commenting guidelines: We welcome comments that add information or perspective, and we encourage polite debate. Statements of fact and well-considered opinion are welcome, but we will not post comments that include obscenities or insults, whether of groups or individuals. We reserve the right to hold our critics to lower standards.




Remember Me?

(you may use HTML tags for style)