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          2019-02-15 来源:国外网站推荐 - 由[国外网站大全]整理 17

            Do you prefer coffee or tea?The answer to that question might in part be down to your genes,research suggests.


            Scientists say a genetic predisposition to perceiving the bitterness of particular substances appears to nudge us towards one beverage or the other.



            Dr Marilyn Cornelis,co-author of the research from Northwestern University in Illinois,said:“The study adds to our understanding of factors determining beverage preferences–taste,in particular–and why,holding all other factors constant,we still see marked between-person differences in beverage preference as well as the amount we consume.”

            这项研究来自美国伊利诺伊州的西北大学,其中的联合作者Marilyn Cornelis博士说:“这项研究让我们对饮料偏好的理解又深了一步,尤其是在口味方面,它同时还解释了为什么会有这样的差异;在所有其他变量控制不变的前提下,我们依?#29615;?#29616;饮料偏好和饮用量在人与人之间有明显的差异。”

            The study,published in the Scientific Reports journal,involved two sets of data.The first was a large twin study which showed that,at least in those of European ancestry,particular genetic variants are linked to the strength of perception of different tastes:


            one specific variant was associated with slightly higher ratings of bitterness for caffeine,another to greater bitterness for quinine and a third to greater bitterness for a drug known as propylthiouracil,or prop.


            The team found people with a greater genetic predisposition to perceiving the bitterness of caffeine drank a little more coffee,but an increased perception of the bitterness of quinine and prop were linked to a small reduction in coffee drinking.


            “While the effect of perception on your daily coffee intake might be relatively small–only a 0.15 cup per day increase–from a normal caffeine taster to a strong caffeine taster,it actually makes you 20%more likely to become a heavy drinker–drinking more than four cups per day,”said Jue Sheng Ong,first author of the research.

            研究的第一作者Jue Sheng Ong说:“虽然这种感知的差异对你每天咖啡饮用量的影响比较小,重口者只比轻口者多0.15杯,但它却让你有20%更高的几?#39135;?#20026;重度饮用者;这里的重度饮用指的是一天喝咖啡超过4杯。”

            The team also found that greater perception of the bitterness of prop was linked to a lower chance of being a heavy drinker of alcohol.