amy winehouseAmy Winehouse may have brain damage as a result of her drug use, a source close to the star has told the Sun.

The source claims that in addition to her ongoing drug habit, Amy had a massive overdose in July (when her family and spokespeople insisted it was simply a reaction to her anti-drug medication), almost exactly a year after her first overdose last August.

The source told the newspaper that Amy has displayed “multiple personality traits” since the episode and has been taking ketamine and crystal meth as well as heroin, cocaine and ecstasy: “The future is bleak, bleak, bleak.

“[Her dad] Mitch does everything he can to protect his daughter - but his ‘explanation’ for Amy’s hospital dash in July was just simply untrue.

“She had smoked an inhuman amount of hash which resulted in acute cannabis poisoning. You have to take a s***load of pot to suffer that severe a reaction. It’s thought she had been smoking it for 36 hours.

“Amy’s fits were as bad as the convulsions she had during her overdose in August last year. No one has mentioned her meth use before - but that stuff is truly nasty.

“She is in need of years of psychiatry and medical treatment if she has a hope.”

Amy is currently facing legal action after pulling out of a headline gig at a festival in Paris last week. She is due to perform at the Isle of Wight’s Bestival next weekend and then is said to be taking time out of performing to concentrate on her next album.