Diet Swap

By swapping diets, rural South Africans and African Americans altered their gut bacteria and risk of developing colon cancer, researchers from the University of Pittsburgh and elsewhere report in Nature Communications.

For two weeks, 20 South Africans ate high-fat, low-fiber Western-style diet, while 20 African Americans in Pittsburgh ate a high-fiber, low-fat African-style diet.

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The UK's Human Fertility and Embryology Authority calls for consumer genetic testing companies to warn customers that testing could uncover family secrets, according to the Guardian.

The New York Times reports that United Nations delegates have been discussing how to govern the genetic resources of the deep sea.

Researchers have transplanted edited cells into mice that appear to combat cocaine addiction, New Scientist reports.

In PNAS this week: analysis of proteolytic enzymes secreted by circulating tumor cells, phylogenetic study of Fv1 evolution, and more.