The love of coffee lies in the genes


Scientists from Northwestern University in Chicago (USA) discovered mutations that make a person drink a lot of coffee. The research results are presented in the journal Scientific Reports. According to experts, the bitter taste of food and drinks usually serves as a warning to humans or other mammals that a future meal contains substances dangerous to life. It is for this reason that coffee addiction looks extremely “unnatural” from an evolutionary point of view.

Experts analyzed data on food habits and DNA of half a million Britons who collected the British genome consortium UK Biobank. Volunteers handed over DNA samples and told how much they use tea, coffee and alcohol.

Next, scientists compared the tastes of subjects with what mutations were present in their genes that control the perception of different tastes. It turned out that those people who had the genes associated with high caffeine sensitivity were most fond of coffee. At the same time, they did not feel quinine and some other bitter substances, RIA Novosti notes.

It is noteworthy that the carriers of “coffee” mutations on average loved tea and alcohol less than other participants in the experiment. Those who were well aware of the taste of quinine and synthetic bitter substances, also rarely consumed alcohol and tea, but did not experience an inexplicable craving for coffee. Previously, researchers from Thomas Jefferson University (USA) found that cold coffee is less useful than hot coffee. Scientists have concluded that a hot drink is rich in antioxidants more than cold brewed coffee.

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