Is it in the Genes?

If you love your morning coffee, there's a chance it's because you have been pre-programmed to. It's in your nature, according to researchers at Johns Hopkins University, who recently discovered that a single protein, known simply as Gr66a, might determine whether or not you crave caffeine.

In the study, fruit flies with the Gr66a gene removed flocked to caffeine-laced food products. The flies would normally avoid these products because of the bitter taste caused by the presence of caffeine. However, the flies seemed to overcome their dislike of the bitter taste with the gene removed - suggesting the taste for caffeine is inherent.

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