The British Government's guidelines say that a man should not regularly drink more than 3-4 alcohol units a day and a woman should not regularly exceed 2-3 units a day.
One alcohol unit is measured as 10ml or 8g of pure alcohol. This equals one 25ml single measure of whisky (ABV 40%), or a third of a pint of beer (ABV 5-6%) or half a standard (175ml) glass of red wine (ABV 12%).
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