More women in Northern Ireland are seeking genetic testing for breast cancer risk, BBC News reports. It says more than 2,000 women in Northern Ireland have undergone BRCA1 and BRCA2 testing, an increase of 10 percent in 10 years, and that that's at a higher level than in England.

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 Senator Lamar Alexander (R-Tenn.), who chairs the Senate health committee, will be retiring at the end of his term, Stat News reports.

UCSF researchers find that having two X chromosomes may contribute to women's longer lifespans, according to Discover's D-brief blog.

The Wall Street Journal reports on the US Centers for Disease Control and Prevention's use of genetic approaches to study foodborne illnesses.

In PNAS this week: immune cell profiling of wild baboons by social status, metabolomics profiling of esophageal tumors, and more.