Alcohol harm expert Richard Piper used to drink heavily. His 'dry by default' rule helped him reduce the risks of drinking without going sober. Being "dry by default" means Piper will drink on rare occasions rather than most days, for example when non-alcoholic alternative to a beer he likes isn't available. Advertisement"There is no such thing as healthy drinking," Piper said. AdvertisementDrinking doesn't only bring health risks.

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Persons: Richard Piper, Piper, Zers, Gallop, Niall Carson Organizations: Gallup, Getty Images Research, European, of Public Health, European Union, US Department of Health, Human Services