He said more work was needed to prove this theory - the study only looked at young teenage boys, making it difficult to assess a link with long-term drinking patterns.

BBC: Alcohol bottles

Additional key priorities in her role included organizing aggressive cleanups of hazardous waste sites with a goal of redevelopment, new jobs and urban revitalization as well as ensuring the long-term protection of drinking water supplies.

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Then, to show the potential long-term physical toll of drinking, the app shows them a photo of how they might look in 10 years at their current rate of alcohol consumption.

CNN: 'Drinking Mirror' app aims to show how alcohol ages you

Damage to the liver and kidneys has been observed in rats chronically (long-term) exposed in their drinking water.

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It says that by cutting smoking, drinking and obesity, many conditions which require expensive, long-term treatment in hospitals or the community could be removed altogether or their impact lessened.

BBC: Obesity is one of the most pressing public health concerns

Ms Knowles told the jury she experienced stomach cramps and had bouts of dizziness, diarrhoea and vomiting after drinking her coffee, but the court heard she did not suffer any long-term damage.

BBC: 'Mercury coffee' case accused to face retrial