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Researchers have found a DNA “clock” that predicts how long you’ll live And they can measure how quickly it’s running down. An international team of scientists has found a way to predict how much time you have left - by comparing your actual age to your biological age, a number worked out by measuring chemical changes to your DNA. The difference between these two numbers can be used as a DNA “clock” to estimate someone’s lifespan, the researchers have discovered. And, we're sorry to tell you this, but if your biological age is higher than your real-life age, you’re more likely to die sooner than someone who’s biological and real age match up - regardless of your sex, whether you smoke, or have cardiovascular disease. In fact, the link between a fast-running biological clock and early death was clear across four independent studies, which involved following almost 5,000 people aged over 50 for up to 14 years. The research, led by the University of Edinburgh in Scotland