Genes are responsible for addiction to coffee. Free Technical Library News

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Genes are responsible for addiction to coffee

17.11.2019

A person prefers the drink, the taste of which he is able to distinguish better. This conclusion was made by an international team of scientists from the USA, Great Britain and Australia, having studied the relationship between genes and favorite drinks of the study participants.

As part of the experiment, the researchers studied people's sensitivity to caffeine, quinine and propylthiouracil - substances that give a certain level of bitterness to popular drinks such as coffee, tea and alcoholic beverages. It is known that a person has receptors that feel this or that substance better. Mutations of these three types of receptors can change their sensitivity.

Experts analyzed the genetic information of 438 participants in the British Biobank data bank and compared it with data on which drinks and how much the participants in the experiment consumed. As a result, the experts found that people who have DNA that allows them to taste caffeine better have an increased risk of becoming a coffee fan: 870% of them drink at least four cups of coffee per day. At the same time, those who, according to genetic analysis, should be especially sensitive to quinine and propylthiouracil avoided coffee.

It is generally accepted that people generally do not like the bitter taste, because they associate it with the unsuitability of the product or drink. However, scientists believe that those who are highly sensitive to the bitterness of caffeine are able to get used to it, as the vigor that coffee gives outweighs the not-so-pleasant taste. At the same time, tea fans are unlikely to fall in love with coffee, since their genes have a low sensitivity to caffeine.

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