Hookah lounge
A hookah lounge (also called a shisha bar or den, especially in Britain and parts of Canada, or a hookah bar) is an establishment where patrons share shisha (flavoured tobacco) from a communal hookah or from one placed at each table or a bar. In Western countries, shisha parlors are often owned and operated by people from the Arab world or South Asia where use of the hookah is a centuries-old tradition. Many shisha parlors incorporate such elements as Islamic decor and Arabic music or Indian music and have traditional decor, but some are simply bars without  the eastern cultural elements. Characteristics. In the United States and Europe, shisha parlors are most popular in college towns and urban areas and are regarded by some as a novel and chic way to socialize. Certain parlors offer modern hookahs with fruit bowls or other kinds of improvements over smoking hookah at home. Some people of Middle Eastern or South Asian extraction consider them a continuation of their own cultural traditions. However, shisha parlors nowadays often distance themselves from the eastern cultures by offering hookah and alcohol without the cultural elements. These bars differ from other bars only in the  fact that they offer hookah. Usually a disposable mouthpiece is provided for each user for hygienic reasons. When alcohol is not sold, shisha parlors derive revenue from sales of coffee, tea, soft drinks and snack foods. Some shisha parlors have well-equipped kitchens and are more akin to bistros. In the broadest sense, any restaurant or nightclub can be considered a shisha parlor or club if it offers patrons hookahs, shisha and a comfortable place to smoke. Some offer Middle Eastern cuisine menu items. In the United States, due to several state tobacco control laws, many shisha bars have made  the transition from offering tobacco shisha to herbal shisha, which is tobacco-free and can legally be smoked indoors in areas that have restrictions on tobacco smoking. Although herbal shisha does not contain tobacco or nicotine, when burned it does produce harmful chemicals, including heavy metals and polycyclic aromatic hydrocarbons, which can cause cancer and heart disease. These harmful chemicals are breathed in both by smokers and bystanders. History. The origins of hookah are controversial, even though most agree that it started either in ancient Persia or the Indian subcontinent. In Europe. Hookah smoking is common in many European and  other countries including: In the United States. In the United States, establishments akin to shisha parlors first opened decades ago in the immigrant quarters of New York City, Chicago, and Los Angeles, California as coffee and tea houses. Many shisha parlors in the United States have elements such as glass tables, plasma televisions, and oxygen bars. Most bars in the U.S. require patrons to be at least 21 years of age to smoke shisha and 21 years of age to purchase (exceptions are Utah, Arizona, Alabama, and New Jersey: 19 years of age to smoke; New York and Vermont are  21 years of age). Over the recent years hookah has become increasingly popular for teens and young adults.  As of 2014, one out of every five high school seniors in the U.S. had tried hookah, and likewise, one in five 18-24 year olds in the U.S. have smoked hookah in the past month.  It is not uncommon now to find hookah bars within short distance of college campuses and in the surrounding towns. This younger generation is often the target for hookah business establishments. Laws about selling and use of hookah in the U.S. differ state by state.  Most  states do not allow minors (under age 18) to smoke hookah and some states ban hookah smoking in public places. Recently, the U.S. Food and Drug Administration (FDA) has begun to regulate hookah tobacco along with cigarettes and other types of tobacco. There is concern that even if FDA places health warning labels on hookah packages, they may not be seen by people who smoke in hookah lounges, since the tobacco is usually taken out of the packages before it is served. Smoking bans and exemptions. Because of the harm of passive smoking, many municipalities, especially in North America and  Europe have enacted smoking bans in public places. Sometimes, however, businesses can obtain special permits allowing smoking within; these permits are typically available only for shisha bars, cigar bars, tobacconists, and similar establishments where smoking is the focus of activity. They are less frequently available for places in which alcohol or food is served. In some cases, the ban is against tobacco smoking specifically. When this is the case, a shisha bar may remain in business by replacing traditional, tobacco-based shisha with a tobacco-free mu‘assel. In order to remain open, many shisha bars cannot sell food or  beverages. Approximately 90% of the cities that have put a ban on smoking in public places have exemptions for shisha bars. The cities with these kinds of exemptions, typically, have more dense populations. Health concerns. Hookah bars are a growing public health concern. Many hookah users do not understand the health risks that come along with the practice. Common incorrect beliefs include that shisha is not addictive and that the smoke contains fewer toxic chemicals and carcinogens. However, hookah smoke contains many of the same toxic chemicals found in cigarettes and it has not been shown to be safer. The  tobacco contains nicotine and is addictive. The water does not filter out the carcinogens or other harmful chemicals are not filtered out. Hookah users breathe in many harmful chemicals, such as carbon monoxide, nicotine, polycyclic aromatic hydrocarbons, and aldehydes. Like cigarettes, breathing in these chemicals cause many health problems, such as cancer, heart disease, lung disease, periodontal disease, and low birth weight in babies whose mothers smoke it. It has been shown that waterpipe tobacco contains 27 known or suspected carcinogens, as well as significant concentrations of toxicants thought to cause addiction, heart disease and lung disease. Traditional charcoal-heated  hookahs deliver nine to ten times more carbon monoxide than do standard cigarettes. There have been multiple published reports of acute carbon monoxide poisoning caused by narghile (waterpipe tobacco/hookah). Hookah smokers sometimes take in so much carbon monoxide, an odorless, poisonous gas, that they develop carbon monoxide poisoning.  Carbon monoxide poisoning causes dizziness, nausea and vomiting, irritability, rapid fall in blood pressure, and chest pain, and often must be treated in hospital emergency departments. This is sometimes known as “hookah sickness” Hookah smoking can also be harmful to non-smokers since hookah releases many harmful substances (including particulate matter , nicotine, and carbon monoxide) in the air that are breathed in by anyone in the area. Due to the health concerns, many cities seek to create tougher restrictions for shisha bars, and some want them shut down altogether.