Cannabis smoking

Cannabis smoking is the inhalation of smoke or vapors released by heating the flowers, leaves, or extracts of cannabis and releasing the main psychoactive chemical, Δ9-tetrahydrocannabinol (THC), which is absorbed into the bloodstream via the lungs. Archaeological evidence indicates cannabis with high levels of THC was being smoked at least 2,500 years ago. Cannabis smoking is the inhalation of smoke or vapors released by heating the flowers, leaves, or extracts of cannabis and releasing the main psychoactive chemical, Δ9-tetrahydrocannabinol (THC), which is absorbed into the bloodstream via the lungs. Archaeological evidence indicates cannabis with high levels of THC was being smoked at least 2,500 years ago. In addition to being smoked and vaporized, cannabis and its active cannabinoids may be ingested, placed under the tongue, or applied to the skin. The bioavailability characteristics and effects of smoking and vaporizing cannabis differ from other cannabis consumption methods in having a more rapid and predictable onset of effect. Cannabis (marijuana) can be smoked in a variety of pipe-like implements made in different shapes and of different materials including hand pipes ('bowls'), water pipes ('bongs'), cigarettes ('joints'), or blunts. When smoking a joint or blunt with someone else or a group of people, it is common courtesy to take no more than two inhalations ('puffs', 'pulls', 'tokes', 'hits', 'rips') then pass it on. With a pipe, bowl, bong, or vaporizer, one inhalation is the norm. Joint is a slang term for a cigarette filled with cannabis instead of tobacco. Alternatively, mainly in Europe, joints may contain tobacco (commonly dubbed 'a spliff', but not to be confused with the Jamaican term Spliff, which refers to a large joint) or various non-addictive herbs. Sometimes a joint will contain kief or hashish; hashish can be heated and made to crumble before placement within the joint. Specially manufactured rolling papers are most often used in industrialized countries; however, recycled brown paper and newspaper are commonly used in the developing world. Modern papers are now made from a wide variety of materials including rice, hemp, soy, and flax. A joint typically contains 250–750 mg net weight of cannabis and/or fillers. A blunt is cannabis rolled with a cigar wrapper (usually tobacco leaf, which contains nicotine). Blunts are often made with blunt wraps: tobacco-based wraps — often flavored — that are related to the wraps used on a blunt cigar and are often used to roll cannabis Pipes made for smoking cannabis, sometimes called pieces or bowls, are made of a variety of materials, including metal fittings, ceramic, borosilicate glass, stone, wood, bamboo among other materials. Subtypes include one-hitters, bubblers, chillums, glass blunts, corn cob pipes, and standard hand pipes.Pipes vary greatly in shape and materials, and most are handmade. The common thread between them is having a narrow screened receptacle ('bowl'), a 'stem' (which may be a long flexible tube as on hookahs and vaporizers), and a 'mouthpiece'. The smoking material is placed in the receptacle and affected with a heat source while air is drawn through the bowl and stem to the user. Blown-glass pipes and bongs are often intricately and colorfully designed. In India and Jamaica, the most commonly used pipe is the chillum.; in the UAE, midwakh; in Morocco, sebsi.