Juan Gris The Open Window painting

Juan Gris The Open Window paintingJuan Gris The Guitar paintingJuan Gris Man in the Cafe painting
Researchers at Kingston University in London used a new technique developed by American experts to measure the risk to regular drinkers over many years.
The tool - called a target hazard quotient (THQ) - gives an indication of risk based on the known safe upper dose for each metal and the likely long-term exposure of someone drinking one glass of wine a day.
Professor Declan Naughton, who reports the findings in Chemistry Central Journal, said the only wines that posed no risk to were from Argentina, Brazil and Italy.
'If you have a THQ of more than one then you should be concerned,' said Professor Naughton.
'In the past we have seen seafood contaminated with mercury with a THQ level of 20. But here we were seeing levels up to 300. It was astonishing and it gives cause for concern.'
Critics of THQs say the technique exaggerates the risk by assuming that all pollutants in food or drink enter the bloodstream.