The Economist -
15 Nov 2018 17:49

THE WORLD loves a cuppa. Even though it takes just a few grams for a brew-up, some 3m tonnes of tea are consumed every year. And tea can be good for you, as it contains compounds that help to lower cholesterol and reduce the risk of cardiovascular disease. But there is a downside. Tea contains caffeine which, although it improves mental alertness, can also cause anxiety, insomnia and other problems. Sipping decaffeinated tea can help, but there are drawbacks to this, too. Stripping away caffeine...
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