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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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Bloomberg reports that the DNA-for-cash deal reported in Kentucky might be a more widespread scam.

St. Jude Children's Research Hospital scientists have treated infants with X-linked severe combined immunodeficiency using gene therapy in an early phase study.

St. Louis Public Radio reports that some African Americans are turning to DNA ancestry testing to help guide genealogical searches.

In Nature this week: a genomic analysis of the snailfish Pseudoliparis swirei, ancient DNA analysis gives insight into the introduction of farming to England, and more.