The Institute of Food Research has clear evidence that people who consume coffee and tea on a regular basis (at least two cups per day) do experience lowered mood states (eg headache, drowsiness) when they are deprived of dietary caffeine, and we have also found a relationship between these withdrawal symptoms and drink preference. This suggests that one factor contributing to the widespread consumption of coffee and tea is a direct result of their potency in the alleviation of the symptoms of caffeine withdrawal.
Institute of Food Research
Agricultural and Food Research Council
22 JulyReuse content