A hookah is a water pipe used to smoke flavored tobacco. Popular across the Middle East, South Asia, and increasingly in lounges and cafés worldwide, the device passes smoke through a water-filled base before it reaches the smoker through a long flexible hose. While many people view hookahs as a milder alternative to cigarettes, a single session delivers roughly 125 times the smoke, 25 times the tar, 2.5 times the nicotine, and 10 times the carbon monoxide of one cigarette.
How a Hookah Works
A hookah has four main parts: a bowl on top, a metal stem running down the center, a glass water base at the bottom, and one or more hoses with mouthpieces for inhaling. Flavored tobacco (called shisha) is packed into the bowl, and small pieces of lit charcoal sit on top of it, separated by a layer of perforated foil or a metal screen. The charcoal burns at roughly 300 to 500°C, hot enough to heat the tobacco and vaporize its moisture without fully combusting it the way a cigarette does.
When you inhale through the hose, air is pulled down through the stem and into the water. The smoke bubbles up through the water, cools slightly, and travels through the hose to your mouth. This cooling effect makes the smoke feel smoother and less harsh than cigarette smoke, which is one reason people assume it’s safer. The water does filter out some particulate matter, but it doesn’t meaningfully reduce the toxic chemicals in the smoke.
What’s in Hookah Tobacco
Shisha is not plain tobacco. It’s a wet, sticky mixture built from four main components: tobacco leaf, vegetable glycerin, molasses or honey, and food-grade flavoring concentrates. The tobacco leaf acts as the carrier for everything else and provides the nicotine. Some brands use “unwashed” leaves that retain their full natural nicotine content, while others rinse or boil the leaves first to strip out much of the nicotine, producing a lighter product.
Vegetable glycerin is the ingredient responsible for the thick, billowing clouds hookah is known for. When heated, glycerin boils before the tobacco burns, creating a dense white aerosol that carries the flavor. Technically, what comes out of a hookah is closer to an aerosol than traditional smoke. Molasses (or honey in premium blends) binds the mixture together and adds body and sweetness. Flavorings, similar to those used in the food industry, create the wide range of fruit, mint, and dessert profiles that make hookah appealing.
Health Risks of Hookah Smoking
The smooth taste and social setting of hookah smoking lead many users to believe it’s harmless or at least significantly safer than cigarettes. That perception doesn’t hold up. Hookah smoke contains the same core harmful substances as cigarette smoke: tar, nicotine, and carbon monoxide. Nicotine-free herbal blends don’t solve the problem either. Studies show that herbal and traditional blends differ only in nicotine content, not in the amounts of carbon monoxide, tar, or cancer-causing hydrocarbons you inhale.
Carbon monoxide exposure is a particular concern. Because the charcoal itself is burning throughout the session, a hookah smoker inhales more than 10 times the carbon monoxide of a cigarette smoker. Cases of carbon monoxide poisoning from hookah use have been documented in medical literature, with symptoms including dizziness, nausea, and loss of consciousness.
Cancer and Lung Disease
Regular hookah use is linked to meaningful increases in cancer risk. Pooled data from multiple studies show that hookah smokers face roughly triple the odds of lung cancer compared to nonsmokers. The risk of esophageal cancer is similarly elevated, at about three times higher. Cancers of the head, neck, and stomach also show increased rates among regular users, roughly double the odds of nonsmokers in each case.
Hookah smoke also damages the lungs over time in ways similar to cigarette smoke. The inhalation of tar and other noxious particles triggers chronic inflammation in the airways, which can progress to chronic obstructive pulmonary disease (COPD). Studies comparing lung function in hookah users and nonsmokers consistently find reduced airflow capacity in regular users. Cardiovascular effects are comparable to cigarette smoking as well, with both short-term spikes in heart rate and blood pressure and long-term increases in heart disease risk.
Why One Session Delivers So Much More
A typical hookah session lasts 45 to 60 minutes, sometimes longer in a social setting. During that time, a smoker takes far more puffs and inhales far greater volumes of smoke than they would from a single cigarette, which takes about five minutes. A meta-analysis from the University of Pittsburgh quantified the difference: one hookah session delivers approximately 125 times the smoke volume of a single cigarette. That volume carries with it 25 times the tar and 10 times the carbon monoxide. Even if the concentration of a given toxin is lower per puff, the sheer volume of smoke overwhelms any dilution effect from the water.
Infection Risk From Sharing
Hookahs are often smoked in groups, with multiple people passing the same hose around. This creates a direct route for transmitting infections. Bacteria, viruses, and fungi can survive on the mouthpiece, in the hose, and in the water base. Respiratory infections like tuberculosis, oral herpes, and other communicable diseases are potential risks when sharing a pipe. Disposable plastic mouthpiece tips reduce but don’t eliminate this concern, since the shared hose and water base can still harbor microbes. Research has found diverse bacterial communities living in hookah tobacco products themselves, varying across brands and flavors.
How Hookahs Are Regulated
In the United States, the FDA extended its regulatory authority to cover all tobacco products, including hookah tobacco, in 2016. This means the agency oversees the manufacture, import, packaging, labeling, advertising, promotion, sale, and distribution of shisha. Hookah tobacco products are subject to the same general framework as other tobacco products, including requirements around health warnings and marketing restrictions. Hookah lounges are also subject to local and state smoke-free air laws, though enforcement and specific rules vary widely by location.