Can a Blood Test Really Tell You When You’ll Die?

October 18, 2011
51 Views

As a taxi takes me across Madrid to the laboratories of Spain’s National Cancer Research Centre, I am fretting about the future. I am one of the first people in the world to provide a blood sample for a new test, which has been variously described as a predictor of how long I will live, a waste of time or a handy indicator of how well (or badly) my body is ageing. Today I get the results.

As a taxi takes me across Madrid to the laboratories of Spain’s National Cancer Research Centre, I am fretting about the future. I am one of the first people in the world to provide a blood sample for a new test, which has been variously described as a predictor of how long I will live, a waste of time or a handy indicator of how well (or badly) my body is ageing. Today I get the results.

Some newspapers, to the dismay of the scientists involved, have gleefully announced that the test – which measures the telomeres (the protective caps on the ends of my chromosomes) – can predict when I will die….

The test is based on the idea that biological ageing grinds at your telomeres. And, although time ticks by uniformly, our bodies age at different rates. Genes, environment and our own personal habits all play a part in that process. A peek at your telomeres is an indicator of how you are doing. Essentially, they tell you whether you have become biologically younger or older than other people born at around the same time.

Full story here.

   

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