Michael Douglas says oral sex caused his throat cancer

Actor Michael Douglas says oral sex is the reason behind his stage 4 throat cancer.

In an interview with Britain's The Guardian, Douglas discussed his role in the Liberace biopic "Behind the Candelabra" and his throat cancer which was diagnosed in August 2010.

Douglas said doctors missed the walnut-sized tumor at the back of his tongue after he suffered with throat irritation for months. Douglas finally went to see a friend's doctor in Montreal who used a tongue depressor to look inside his mouth.

""I will always remember the look on his face," Douglas said previously. "He said: 'We need a biopsy.' There was a walnut-size tumour at the base of my tongue that no other doctor had seen," said Douglas.

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