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Cannabis smoking (known colloquially as smoking weed or smoking pot) is the inhalation of smoke or vapor released by heating the flowers, leaves, or extracts of cannabis and releasing the main psychoactive chemical, Δ 9-tetrahydrocannabinol (THC), which is absorbed into the bloodstream via the lungs.
Long-term effects of smoking cannabis include lung inflammation. [90] Smoking cannabis has been linked to adverse respiratory effects including: chronic coughing, wheezing, sputum production, and acute bronchitis. [87] It has been suggested that the common practice of inhaling cannabis smoke deeply and holding breath could lead to pneumothorax.
What are effects of smoking marijuana on the lungs? Marijuana could cause a type of emphysema more than tobacco smoking, new study finds. Smoking marijuana can raise risk of lung disease, chest ...
A man smoking cannabis in Kolkata, India. As of 2025, no high-quality evidence has been found linking cannabis smoking to lung cancer, despite cannabis smoke having similar properties to tobacco smoke. Why this is the case remains unclear.
Right now, medical marijuana is commonly used to treat a range of other issues. But that might not be all that the drug can do. Smoking marijuana might have some surprising health benefits
Smoking and vaping, however, deliver chemicals directly to the lungs, into the blood and to the brain. The only other consumer product intended for smoking in this country is tobacco.
Marihuana prensada ('pressed marijuana') is a cannabis-derived product widespread among the lower classes of South America, [189] especially from the 90s. Locally it is known as "paraguayo" or "paragua", since its main producer is Paraguay. [190] Marijuana is dried and mixed with binding agents that make it toxic and highly harmful to health. [191]
Chemicals inhaled through smoking travel from the lungs into the blood and to the brain and other internal organs. ... The investigator alleged the infusion of illegally grown weed was poorly ...