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John Travolta says Scientology could have saved Anna Nicole Smith.

The actor insists the late Playboy Playmate may still be alive if she had checked into the controversial Scientology drug and detox programme Narconon.

John, who worked with Anna Nicole on Be Cool, said: "It's so sad. We could have helped her with Narconon but didn't get the chance to. I wish we had."

Narconon has been widely criticised for its unorthodox methods which are inspired by the teachings of Scientology founder L. Ron Hubbard.

The treatment includes taking large doses of vitamins, an intensive running programme, and long sauna sessions which "run out" drugs and "radiation" from the body.

Scientologists insist Narconon is 85 per cent effective, but it has been alleged the method has been used to convert vulnerable drug addicts to the bizarre sci-fi cult.

A toxicology report from Anna Nicole's autopsy is yet to be released.

The model-and-actress died on February 8, after being found unconscious in Hollywood's Seminole Hard Rock Hotel and Casino.

Methadone and prescription drugs were found in her hotel room.