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Summary Study claimed that genetic factors could explain why some people consume large amounts of caffeine.
Researchers scanned genetic variations in over 40,000 individuals to search for links with high caffeine intake. And they found two stretches of DNA associated with high intake of tea, coffee, chocolate, softdrinks and other caffeine sources.Study author Dr Neil Caporaso of the National Cancer Institute in Maryland, said people with the high consumption genetic variation consume more caffeine about 40 mg – or a third of a cup of coffee or a can of cola than others.“There are hundreds of genes known for specific medical conditions - for dietary consumption we know very little. Now, for the first time, we know specific genes that influence the amount of caffeine that individuals consume,” he said.The two stretches of DNA linked with high caffeine consumption contain two genes thought highly likely to be involved in the way the body processes caffeine.
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