The 55 men in a drug doping study in Sweden were normal and healthy. And all agreed, for the sake of science, to be injected with testosterone and then undergo the standard urine test to screen for doping with the hormone.
The results were unambiguous: the test worked for most of the men, showing that they had taken the drug. But 17 of the men tested negative. Their urine seemed fine, with no excess testosterone even though the men clearly had taken the drug.
It was, researchers say, a striking demonstration of a genetic discovery. Those 17 men can build muscles with testosterone, they respond normally to the hormone, but they are missing both copies of a gene used to convert the testosterone into a form that dissolves in urine. The result is that they may be able to take testosterone with impunity.
The gene deletion is especially common in Asian men, notes Jenny Jakobsson Schulze, a molecular geneticist at the Karolinska University Hospital in Stockholm. Dr. Schulze is the first author of the testosterone study, published recently in The Journal of Clinical Endocrinology and Metabolism.
This was also on The Economist a few weeks back.

Workers said they thought they were just making colourful flags and did not realise their meaning.
Among the millions of clips on the video-sharing Web site YouTube are 11 racially offensive Warner Brothers cartoons that have not been shown in an authorized release since 1968.
It’s a cruel irony: Car navigation devices keep you from getting lost, but their location-sensing acumen won’t help you find them if they get lost or stolen. Why not? Because location and tracking are two different matters. “The GPS calculates location for you. Communicating that location to a tracking center requires a separate service,” says Kanwar Chadha, founder and vice president of SiRF Technology, the largest supplier of GPS chips to navigation device makers.
ARIELLE GREEN, a publicist in Manhattan, knows what most of her friends earn, whether it is $28,000 a year or $100,000. And she does not seem particularly shy about disclosing her income ($30,000 a year, plus overtime).

