Considering that there are now 4,000 to 5,000 tests for heritable conditions, the question of how good is any test if it doesn't lead to actionable results is on the mind of a lot of people in the consumer genetic testing industry. Scripps' Eric Topol is conducting an experiment to see if taking a test (in this case, they're using Navigenics) will spur people to actually improve their lifestyles. Most experts still urge caution. If you're not taking the test under genetic counseling supervision, you might as well skip it, says one.

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Vivek Murthy is no longer the surgeon general of the US, the Associated Press reports.

People around the globe took to the streets to support science — some with signs.

Parents who learn of their increased genetic risk of disease also contend with telling their children about theirs, the New York Times writes.

In PLOS this week: loci linked to body mass index measurements, long non-coding RNA expression and urothelial carcinoma prognosis, and more.