Researchers at Boston University claim they can predict whether someone will live to 100 with up to 85 per cent accuracy.

(After studying the DNA of centenarians and identifying common genetic variations they have developed a genetic test for healthy ageing, which may have contributed to their longevity, but the test is most reliable late in life, meaning it is unlikely to be useful as an early predictor of lifespan.

Would you really want to know though?  I mean, they can’t predict whether you’ll be run over by a bus, can they.)