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Americium-241 is an α-emitter with a weak γ-ray byproduct. Safely handling americium-241 requires knowing and following proper safety precautions, as without them it would be extremely dangerous. Its specific gamma dose constant is 3.14 × 10 −1 mR/hr/mCi or 8.48 × 10 −5 mSv/hr/MBq at 1 metre (3 ft 3 in). [27]
A 2012 special report by the British Lung Foundation concluded that cannabis smoking was linked to many adverse effects, including bronchitis and lung cancer. [83] They identified cannabis smoke as a carcinogen and also said awareness of the danger was low compared with the high awareness of the dangers of smoking tobacco particularly among ...
Due to the way marijuana is smoked — unfiltered and breathed in deeply and held in the lungs and throat for a few seconds — the risk from cannabis smoke could be even greater, experts say.
Americium is used in the most common type of household smoke detector, which uses 241 Am in the form of americium dioxide as its source of ionizing radiation. [101] This isotope is preferred over 226 Ra because it emits 5 times more alpha particles and relatively little harmful gamma radiation.
Nearly half of U.S. states now permit recreational marijuana, but studies say there are risks to frequent usage.
Among current marijuana users, nearly 74% reported smoking as the most common form of consumption; 4% were daily users, while 7% used less than daily. Nearly 29% of daily marijuana users and 44% ...
Cannabis smoke was listed as a cancer agent in California in 2009. [31] A study by the British Lung Foundation published in 2012 identifies cannabis smoke as a carcinogen and also finds awareness of the danger is low compared with the high awareness of the dangers of smoking tobacco particularly among younger users. Other observations include ...
A survey of American adults found that many erroneously believe it is safer for the lungs to smoke weed than tobacco, and that any secondhand smoke from marijuana is also safer.