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If you knew you carried a gene that increased your risk of lung cancer, would it change the way you feel about smoking? What about a gene that meant you were going to develop an illness that has no cure or treatment? In the future, doctors may be able to give personal health advice, based on your genetic make-up. But a genetic diagnosis will probably be more useful for people with a family history of, say, heart disease, allowing doctors to detect illness in its early stages, and to prescribe better treatment.

If you knew you carried a gene that increased your risk of lung cancer, would it change the way you feel about smoking?
If you knew you carried a gene that increased your risk of lung cancer, would it change the way you feel about smoking?
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