One shisha a month, is that dangerous?

At that frequency the risk is low. The danger rises quickly with regularity — beyond 1 session a week, respiratory and cardiovascular markers start to decline.

An individual disposable mouthpiece, is that enough?

For infections, yes — it is good practice. For tar and carbon monoxide, it changes nothing.

If I smoke shisha without swallowing the smoke, is that OK?

Impossible: pulling on a shisha requires a very active inhalation, which inevitably sends the smoke deep into your lungs. And passive smoking — the smoke lingering in the room — stays very significant.

Is there an electronic shisha?

The name exists, but it is a misnomer: these are big electronic cigarettes, not real shishas.

Shisha and hookah: the 'less harmful' myth and the real carbon monoxide load

One shisha session delivers 25 times more tar and 10 times more carbon monoxide than a cigarette. Water filters nothing. Here is the science.

June 25, 2026 Aria

The scientific basis on quitting smoking was reviewed on a voluntary basis by Pr. Bertrand Dautzenberg , a tobacco specialist, in order to rule out gross, potentially dangerous errors. It reflects positions commonly shared by health professionals and health agencies, without always corresponding exactly to his thinking or his practice. He is not the author of this text; he has only carried out a vigilance review of it.

You smoke shisha with friends, on a terrace, at parties. You tell yourself it is sociable, just scented smoke, and the water filters out the nasty stuff.

All of that is wrong — except 'with friends'. And even that is awkward when you look at what travels through the shared mouthpiece.

How it really works

The shisha (also called hookah, narguile, water-pipe) heats flavoured tobacco with burning charcoal. The smoke travels through a water bowl before being inhaled via a hose and mouthpiece.

This setup produces two effects you do not see:

Charcoal combustion adds massive amounts of carbon monoxide.
Smoke cooled by water goes deeper and stays longer in your lungs (because it is less irritating, it does not make you cough).

× 25 the tar and × 10 the carbon monoxide per shisha session, versus a single cigarette.

University of Pittsburgh meta-analysis, Primack et al.

The water-filter myth

If you take away one thing from this article: the water filters nothing useful in a shisha.

It may trap a few fine particles. It does not trap nicotine, tar, carbon monoxide or nitrosamines (the main carcinogens).

Contrary to a widespread belief, the water in a hookah does not significantly filter the harmful chemicals out of the smoke. The smoke leaving the mouthpiece remains heavily loaded with carbon monoxide, heavy metals and carcinogens.

FDA Center for Tobacco Products

One session = how many cigarettes?

It is the most asked question — and the answer is not a single number. Depending on session length, charcoal type and depth of inhalation, a 1-hour session delivers the equivalent of about 40 cigarettes in terms of volume of smoke inhaled, but that comparison is misleading.

Put differently: one shisha session does not equal 100 cigarettes in toxicity (that myth has been tempered by recent science), but it does deliver far more smoke, tar and CO than one cigarette — and likely as much as several.

The real health consequences

The strongest evidence (Cancer Research UK, FDA, WHO) shows:

Cancers linked to tobacco: lung, mouth, throat, oesophagus, bladder.
Respiratory disease: chronic bronchitis, worsened asthma, COPD.
Cardiovascular disease: the same cascade as cigarettes, fuelled by carbon monoxide.
Infections: tuberculosis, herpes, hepatitis — transmitted through the shared mouthpiece.
Low birth weight in pregnant women who smoke shisha.

Why the 'healthy shisha' myth persists

Several reasons stack up:

Sociable: you share, you chat, you take your time.
Flavoured: apple, strawberry, mint — the smoke tastes pleasant.
Cooled: none of the burning sensation of a cigarette.
Marketing: shisha bars sell the image of a leisure activity, not a tobacco product.
Lax regulation, or poorly enforced, compared with cigarettes.

The result: many young adults who would never smoke a cigarette regularly smoke shisha.

And tobacco-free hookah?

Some venues serve 'herbal shisha', made from aromatic plants. The marketing pushes the absence of nicotine. But:

tar and carbon monoxide are produced by combustion, regardless of whether tobacco is there or not,
FDA and CDC studies find equivalent levels of carcinogens between tobacco shisha and herbal shisha.

Without nicotine, it is less addictive. But it is not significantly less toxic.

Things worth knowing

In United Kingdom

Your questions

One shisha a month, is that dangerous?

At that frequency the risk is low. The danger rises quickly with regularity — beyond 1 session a week, respiratory and cardiovascular markers start to decline.
An individual disposable mouthpiece, is that enough?

For infections, yes — it is good practice. For tar and carbon monoxide, it changes nothing.
If I smoke shisha without swallowing the smoke, is that OK?

Impossible: pulling on a shisha requires a very active inhalation, which inevitably sends the smoke deep into your lungs. And passive smoking — the smoke lingering in the room — stays very significant.
Is there an electronic shisha?

The name exists, but it is a misnomer: these are big electronic cigarettes, not real shishas.

sources

Primack BA et al., waterpipe vs cigarette meta-analysis, University of Pittsburgh, Public Health Reports, 2016.
CDC, Hookahs — Smoking and Tobacco Use, updated 2024.
FDA, Hookah Tobacco (Shisha or Waterpipe Tobacco), 2024.
Cancer Research UK, Shisha, chewing tobacco, betel, paan and other tobacco, 2024.