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Abstract
We examined genetic variants that have previously been found to be associated with coffee consumption within the UK Biobank and assessed their association with tea, coffee and other beverages. We found positive associations of coffee genetic risk scores with both caffeinated and decaffeinated coffee and tea consumption. There was no clear evidence for positive associations with most other non-alcoholic beverages, but higher genetic risk for coffee consumption was associated with lower daily water consumption. The genetic risk scores were associated with increased alcohol consumption, but not consistently with other socio-demographic and life-style factors. These findings support the use of these genetic variants as instruments for combined tea and coffee consumption.