Risk of addiction, infections, carbon monoxide poisoning: Smoking a Shisha health is not as harmful as Smoking a cigarette, it is a widespread misconception. The opposite is the case: the water pipe is connected to smoke even with more health risks than Smoking tobacco cigarettes.
The risks – they are scientifically well documented – ranging from respiratory diseases, diseases of the lungs using cancer disorders to cardiovascular.
Nicotine, benzene, tar and heavy metals can be deeply inhaled
In a hookah, special hookah is world tobacco using a piece of charcoal, in the 100 degree Celsius waste. The resulting tobacco smoke vessel by the column of smoke of the hookah, the water and the hose and inhaled. The water in a hookah filters out only a few water-soluble substances from the tobacco smoke. In the smoke contained harmful substances such as nicotine, benzene and tar, however, get unfiltered into the lungs.
The water cools the tobacco smoke, can be inhaled, the smoke even deeper. The carcinogenic, the smoke contains substances that can penetrate in this way, particularly deep in the lung tissue and even the smallest pulmonary vessels damage. The Shisha is Smoking in addition, especially a lot of tar added, because during Heating of the charcoal in addition, tar and heavy metals arise. 
dpa/Soeren Stache/picture Icon In the combustion of water pipes, coal is formed, among other things, carbon monoxide. These heavy metals are dangerous because the human body breaks down, but in the bone and in fat tissue is stored.
Dr. med. Heidrun Thaiss directs since the beginning of 2015, the Federal centre for health education (BZgA). She studied human medicine and received his doctorate at the Albert-Ludwigs-University of Freiburg-im-Breisgau, issues of coagulation disorders in children with Diabetes.
Healthier than cigarettes tobacco? So harmful is Shisha Smoking
Tobacco smoke contains more than 4,800 harmful substances. Whether the tobacco smoke passes through the Smoking of cigarettes or the Smoking of a hookah in the body, plays no role. Shisha tobacco will be also holding means, and flavors of the course of damp sets in, let the tobacco smoke for instance vanilla or Apple taste. The Carbonizing can be caused by the addition of these substances, allergens or other harmful substances. 
dpa/Peter Steffen/Symbol A woman smokes a water pipe in a hookah Bar.
Also Shisha can make you addicted to Smoking
In the Shisha tobacco, also nicotine is included. Nicotine is a psychoactive substance-a drug, which can extremely rapidly lead to physical dependence. When Smoking a hookah is much more nicotine is absorbed than when Smoking a traditional tobacco cigarette. Even those who only smoke occasionally – about every four days – Shisha, takes the same amount of nicotine as Smoking two cigarettes a day.
Shisha paste, or shiazo stones mountains health risks
Hookahs can be smoked without Shisha tobacco with Shisha paste, or shiazo stones. Both usually contain no nicotine. Nevertheless, they pose health risks, because different taste and aroma substances as well as the fogging agent to be inhaled when using. This can lead to respiratory irritation. It is not ruled out that carcinogenic substances such as formaldehyde are absorbed in this way. 
Reuters/Tobias Felber , A young man smokes a water pipe in a pub.
Shishas as a route of Transmission for infectious diseases
The Shisha smoke can be transferred for joint use by several persons with various infectious diseases, such as Herpes or Hepatitis. The replacement of the mouth piece protects only to a limited extent: over the hookah hose and the water in the hookah disease germs can be passed on and because of the lack of Hygiene in addition, germs or fungi arise, which migrate in the body.
Water pipe: carbon monoxide poisoning is possible
By the Burning of charcoal in the hookah carbon monoxide. This is especially dangerous if Shisha be smoked in enclosed indoor such as Bars, or small living. Due to a high concentration of carbon monoxide in the room air, it can cause symptoms of poisoning such as dizziness, headaches, Nausea or even unconsciousness.