For this she and her colleague Amy Stamates invited 16 volunteers - eight men and eight women - to the university for three different drinking tests each. Each of them received one of three drinks at each test and was then asked to state how he felt, whether he felt the effect of the alcohol and how he would assess his ability to drive. An alcohol determination in the breath followed, as well as a reaction test on the computer. The drinks were a mixture of vodka and a citrus lemonade, the latter once in the sugary version and once in the light version, which contained the sweetener aspartame. The third was an alcohol-free placebo drink.
Normal Limo: Driving allowed, Light version: Driving prohibited
Result: Although the subjects felt the same after sugary and artificially sweetened long drink, they did worse after the light version in the reaction test. In addition, the concentration of alcohol in their breath and thus in the blood was higher: in the normal lemonade, the researchers measured a value of 0.77 and the Light-Limo of 0.91 per thousand - despite the exact same alcohol content of the drinks. In the former, driving at a limit of 0.8 per thousand, as it prevails in the US, would be legal, but not more in the US, the researchers emphasize. display
However, they find it particularly problematic that the test participants did not feel the difference. This can lead to greater problems in assessing their own driving ability and increase the risk of an accident on the road, they admonish. However, what causes the measured difference, they can not say yet. The digestive tract may treat the sugary soda more like a meal, they speculate. And one knows that food delay the absorption of alcohol into the blood. Thus, the result of the study would be more attributable to a dampening effect of the sugar than to any kind of accelerating effect of the sweetener, they conclude.Cecile Marczinski and Amy Stamates (Northern Kentucky University, Highland Heights): Alcoholism: Clinical and Experimental Research, doi: 10.1111 / acer.12039 © science.de - Ilka Lehnen-Beyel