A cup of coffee can affect your taste
Trying to quit the sweet stuff ? According to a study, your morning cup of joy could be making it more difficult for you, with researchers finding that caffeine could temporarily affect your taste buds. It is known that caffeine has a powerful effect on adenosine receptors, which promotes relaxation and sleepiness. It suppresses these receptors and makes us feel more awake, which is why coffee so appealing and widely consumed. However these receptors also has another effect — decreasing the ability of our taste buds to taste sweetness. Recent studies have shown that adenosine receptors are present in sweet sensitive taste cells of mice the new research, carried out by Cornell University, set out to look whether the caffeine can also have an effect on the taste buds of humans. For this, the team recruited 107 participants and randomly split them into 2 groups. One group of participants were asked to drink coffee with 200 milligrams of caffeine added to it. The other group drank decaffeinated coffee. Both groups had sugar in their drinks. The team found that participants, who drank caffeinated coffee, rated it as less sweet than those who drank the decaffeinated one. “When you drink caffeinated coffee, it will change how you perceive taste. If you eat food directly after drinking a caffeinated coffee or other caffeinated drinks, you will perceive food differently," explained senior author Robin Dando. In addition, participants were also asked to rate their level of alertness and guess how much caffeine had been in their coffee. Participants reported the same increase in alertness after drinking either the caffeinated or decaffeinated samples, and failed to predict if they had consumed the decaffeinated or the caffeinated version. However despite feeling more alert, there was no significant improvement in reaction times. “We think there might be conditioning effect to the simple action of drinking coffee. So panelists felt alert even if the caffeine was not there,” said Dando.