alcohol

Trading in pints of Guinness at the pub in post-concert celebrations for Guinness Zero, Hansard now writes the number of days without alcohol on his inner wrist to keep track.

"What we're realising from this work is that our relationship with alcohol goes deep back into evolutionary time, probably about 30 million years," she told BBC News.

This could include medicines or specific lifestyle advice - such as people likely to develop some liver disorders benefitting from cutting back their alcohol intake more than the general population.

Patients are treated by removal of the maggots, which need to be killed by putting them into a sealed container of concentrated ethyl or isopropyl alcohol then disposed of as biohazardous waste.

Their cancers are more often tied to lifestyle - tobacco and alcohol drive lung and oral cancers, both aggressive and less responsive to treatment.