The lack of association with herbal tea intake in the UK Biobank study was attributed to that it is not consumed in high quantities, or that it is not used as a replacement of caffeinated beverages (as black tea, containing more caffeine than green tea, is the regular tea beverage in the UK). A possible explanation to our finding of coffee preference instead of tea in rs2470893 SNP A allele carriers could be the automatic limitation of the consumption of other drinks among habitual coffee consumers (rs2470893 SNP A carriers), as a person has to consume only a certain number of drinks per day. However, the strong inverse correlation between the two beverages intake observed in rs2470893 A allele carriers disappeared when analyzing rs2470893 GG genotype carriers, suggesting a direct link between genotype and beverage preference. Nevertheless, the preference could not be attributed to the higher caffeine content of coffee, as a cup of green tea decoction contains more caffeine than a
The text above was approved for publishing by the original author.