Fumar (en ingles)

Smoking

Smoking is a practice in which a substance, most commonly tobacco and/or cannabis, is burned and the smoke is tasted or inhaled. This is primarily practised as a route of administration for recreational drug use, as combustion releases the active substances in drugs such as nicotine and makes them available for absorption through the lungs. It can also be done as a part of rituals, toinduce trances and spiritual enlightenment.
The most common method of smoking today is through cigarettes, primarily industrially manufactured but also hand-rolled from loose tobacco and rolling paper. Other smoking implements include pipes, cigars, bidis, hookahs, vaporizers and bongs. It has been suggested that smoking-related disease kills one half of all long term smokers but these diseasesmay also be contracted by non-smokers. A 2007 report states that about 4.9 million people worldwide each year die as a result of smoking.[1]
Smoking is one of the most common forms of recreational drug use. Tobacco smoking is today by far the most popular form of smoking and is practiced by over one billion people in the majority of all human societies. Less common drugs for smoking includecannabis and opium. Some of the substances are classified as hard narcotics, like heroin, but the use of these is very limited as they are often not commercially available.
The history of smoking can be dated to as early as 5000 BC, and has been recorded in many different cultures across the world. Early smoking evolved in association with religious ceremonies; as offerings to deities, in cleansingrituals or to allow shamans and priests to alter their minds for purposes of divination or spiritual enlightenment. After the European exploration and conquest of the Americans, the practice of smoking tobacco quickly spread to the rest of the world. In regions like India and Subsaharan Africa, it merged with existing practices of smoking (mostly of cannabis). In Europe, it introduced a new type ofsocial activity and a form of drug intake which previously had been unknown.
Perception surrounding smoking has varied over time and from one place to another; holy and sinful, sophisticated and vulgar, a panacea and deadly health hazard. Only relatively recently, and primarily in industrialized Western countries, has smoking come to be viewed in a decidedly negative light. Today medical studieshave proven that smoking tobacco is among the leading causes of many diseases such as lung cancer, heart attacks, COPD, erectile dysfunction and can also lead to birth defects. The inherent health hazards of smoking have caused many countries to institute high taxes on tobacco products and anti-smoking campaigns are launched every year in an attempt to curb tobacco smoking.
History
Main article:History of smoking
Early uses

Aztec women are handed flowers and smoking tubes before eating at a banquet, Florentine Codex, 1500
The history of smoking dates back to as early as 5000 BC in shamanistic rituals.[2] Many ancient civilizations, such as the Babylonians, Indians and Chinese, burnt incense as a part of religious rituals, as did the Israelites and the later Catholic and OrthodoxChristian churches. Smoking in the Americas probably had its origins in the incense-burning ceremonies of shamans but was later adopted for pleasure, or as a social tool.[3] The smoking of tobacco, as well as various hallucinogenic drugs was used to achieve trances and to come into contact with the spirit world.
Substances such as Cannabis, clarified butter (ghee), fish offal, dried snake skins andvarious pastes molded around incense sticks dates back at least 2000 years. Fumigation (dhupa) and fire offerings (homa) are prescribed in the Ayurveda for medical purposes, and have been practiced for at least 3,000 years while smoking, dhumrapana (literally "drinking smoke"), has been practiced for at least 2,000 years. Before modern times these substances have been consumed through pipes,...