If current trends continue, the cost of having one's genome analyzed will be comparable to that of the weekly supermarket bill. But will this give us the ability to predict which common diseases are likely to afflict us in the future? Well, according to a new study of twins that was published this week in Science Translational Medicine, the answer in most cases is likely to be no. In fact, the Johns Hopkins researchers warn of complacency, especially with respect to negative results; they could inadvertently give people a false sense of security...
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