Using mouthwash could increase risk of cancer by nine times, claim scientists

MOUTHWASHES containing alcohol can cause oral cancer and should be removed from supermarket shelves, a dental health study claims.
Scientists say there is now "sufficient evidence" that such mouthwashes contribute to an increased risk of the disease.

The ethanol in mouthwash is thought to allow cancer-causing substances to permeate the lining of the mouth.

Michael McCullough, associate professor of oral medicine at the University of Melbourne, Australia, who led the study, said: "We see people with oral cancer who have no other risk factors than the use of (mouthwash containing alcohol], so what we've done is review all the evidence.

"Since this article, further evidence has come out, too. We believe there should be warnings. If it was a facial cream that had the effect of reducing acne but had a four to fivefold increased risk of skin cancer, no-one would be recommending it."

Professor McCullough, chair of the Australian Dental Association's therapeutics committee, said the alcohol in mouthwashes "increases the permeability" of the mucus membrane to other carcinogens, such as nicotine.

A toxic breakdown product of alcohol called acetaldehyde that may accumulate in the oral cavity when swished around the mouth is also a "known human carcinogen," he said.

Top-selling mouthwashes contain as much as 26 per cent alcohol.

Smoking and alcohol are well-established risk factors in causing cancer, but the use of outhwash containing alcohol is more controversial.

Source: news.scotsman