Tucson, AZ. (PRWEB) February 19, 2015 <\/p>\n
Could genetic codedetermine someones coffee habit? Apparently so, according to a new study by researchers at the Harvard T.H. Chan School of Public Health (HSPH). <\/p>\n
Produced with the support of the Coffee and Caffeine Genetics Consortium and published in the journal Molecular Psychiatry this past fall, the studyone of several recent HSPH investigations of the popular beverageinvolved a meta-analysis of genomic data from more than 120,000 regular coffee drinkers of European and African ancestry. The researchers analyzed their subjects genetic makeup through DNA sequencing, and compared those results to self-reported coffee-drinking figures, in an effort to understand why some people need more of the stimulant than others to feel the same effect. Their data suggest that people instinctively regulate their coffee intake in order to experience the optimal effects of caffeine. <\/p>\n
Lead author Marilyn Cornelis, a former research associate in the HSPH nutrition department who is now assistant professor in preventive medicine at Northwestern, says their findings provide insight not only on why caffeine affects people differently, but also on how these effects influence coffee-drinking behavior. One individual, for example, may need three cups of coffee to feel invigorated, while another may need only one. If that one-cup-a-day person consumes four cups instead, Cornelis explains, any jitters or other ill effects that result may discourage that level of consumption in the future. <\/p>\n
Given coffees widespread consumption, its effects on health have been the subject of continuing interest and debate. The newest edition of The Diagnostic and Statistical Manual of Mental Disorders, for example, lists both caffeine intoxication and withdrawal as disorders. On the other hand, a study released in January by other investigators at HSPH found that drinking up to six cups of coffee a day showed no association with any increased risk of death (including from cancer or cardiovascular disease). Going back several yearscoffee often had a bad rap, Cornelis says. I hope to finally account for those genetic variants and possibly other risk factors that might modify our response to coffee or caffeine. <\/p>\n
Her team identified six new genetic variants associated with habitual coffee drinking, including twoPOR and ABCG2related to caffeine metabolism, and another two that may influence the psychological boost and possible physical health benefits of caffeine. The most surprising aspect of the study, Cornelis reports, was the discovery that two genes involved in glucose and lipid metabolismGCKR and MLXIPLare also linked for the first time to the metabolic and neurological effects of caffeine. <\/p>\n
Coffee is possibly protective, Cornelis says. Eventually, she hopes to account for those genetic variants and possibly other risk factors that might modify our response to coffee or caffeine. We know coffee is one of the primary sources of antioxidants of the American diet. If some individuals can metabolize caffeine quickly, then theyre potentially getting rid of the adverse effects of caffeine yet still experiencing the beneficial effects of other coffee constituents. <\/p>\n
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Enhancing the Caffeine Experience and How Coffee Habits Relate to Our Genetic Code<\/a><\/p>\n","protected":false},"excerpt":{"rendered":" Tucson, AZ. (PRWEB) February 19, 2015 Could genetic codedetermine someones coffee habit Continue reading