Original articles

Carboxyhaemoglobin levels in water-pipe and cigarette smokers

Ansa Theron, Cedric Schultz, James A Ker, Nadia Falzone


Water-pipe smoking is growing in popularity, especially among young people, because of the social nature of the smoking session and the assumption that the effects are less harmful than those of cigarette smoking. It has however been shown that a single water-pipe smoking session produces a 24-hour urinary cotinine level equivalent to smoking 10 cigarettes per day.

Aim. We aimed to measure carboxyhaemoglogin (COHb) blood levels before and after water-pipe and cigarette smoking sessions.

Method. Self-confessed smokers older than 18 years (N=30) volunteered to smoke a water-pipe or a cigarette and have their blood COHb levels measured under controlled conditions.

Results. Mean baseline COHb levels were 2.9% for the 15 cigarette smokers and 1.0% for the 15 water-pipe smokers. Levels increased by a mean of 481.7% in water-pipe smokers as opposed to 39.9% in cigarette smokers.

Conclusion. The study demonstrated that water-pipe smokers had significantly higher increases in blood COHb levels than cigarette smokers during a single smoking session.

Authors' affiliations

Ansa Theron,

Cedric Schultz,

James A Ker, University of Pretoria

Nadia Falzone,

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Water-pipe smoking; Carboxyhaemoglobin blood levels

Cite this article

South African Medical Journal 2010;100(2):122-124.

Article History

Date submitted: 2009-04-29
Date published: 2010-01-29

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