Longevity gene debate.

A collaboration between German, French, and British laboratories is challenging the basic observations on extending life span in nematodes and fruitflies, made in American laboraties, that started off the excitement about resveratrol (in red wine) and the sirtuin genes. From Wade's review:

Both experiments were flawed, they say, because the worms and flies used as a control were not genetically identical to the test organisms. The London researchers report that they have repeated the experiments with proper controls and found that extra sirtuin does not, after all, make the worms or flies live longer.