8 Up in smoke?
The debate rages on about legalising cannabis but, in the meantime, what is its impact on the brain? Dr Daniel Amen has just published a study that examined 62,454 SPECT scans to discover the factors that cause premature ageing. Schizophrenia was number one. “The next worst surprised us,” says Dr Amen. “It’s marijuana.” He supports legalisation, but “let’s not say its good for us.”