Does smelling electronic cigarettes count as second-hand smoke?

Puas hnov cov luam yeeb hluav taws xob suav tias yog cov pa luam yeeb thib ob?

Kev tshawb fawb txog nitrosamines yog qhov tseem ceeb tshaj plaws ntawm ntau cov kev tshawb fawb.Raws li World Health Organization daim ntawv teev cov carcinogens, nitrosamines yog cov feem ntau carcinogenic thawj carcinogens.Cov pa luam yeeb muaj ntau cov tshuaj yeeb-tshuaj nitrosamines (TSNA), xws li NNK, NNN, NAB, NAT… Ntawm lawv, NNK thiab NNN tau raug txheeb xyuas los ntawm WHO tias ua rau mob qog noj ntshav muaj zog, uas yog cov carcinogens loj. ntawm luam yeeb thiab kev phom sij ntawm cov pa luam yeeb thib ob.Tus "culprit".

Puas muaj cov pa luam yeeb e-luam yeeb muaj cov tshuaj nitrosamines?Nyob rau hauv teb rau qhov teeb meem no, nyob rau hauv 2014, Dr. Goniewicz tau xaiv 12 high-muag e-luam yeeb cov khoom nyob rau hauv lub lag luam thaum lub sij hawm rau kev soj ntsuam cov pa luam yeeb.Cov txiaj ntsig kev sim qhia tau hais tias cov pa luam yeeb ntawm cov khoom lag luam luam yeeb (yuav tsum yog qhov thib peb-tiam qhib hluav taws xob luam yeeb) muaj nitrosamines.

Nws yog tsim nyog sau cia tias cov ntsiab lus ntawm nitrosamines hauv e-luam yeeb yog qis dua li cov pa luam yeeb.Cov ntaub ntawv qhia tias NNN cov ntsiab lus hauv e-luam yeeb tsuas yog 1/380 ntawm NNN cov ntsiab lus ntawm cov pa luam yeeb, thiab NNK cov ntsiab lus tsuas yog 1/40 ntawm NNK cov ntsiab lus ntawm cov pa luam yeeb."Qhov kev tshawb fawb no qhia peb tias yog tias cov neeg haus luam yeeb hloov mus rau e-luam yeeb, lawv tuaj yeem txo qis kev haus luam yeeb cuam tshuam txog cov tshuaj phem."Dr. Goniewicz sau rau hauv daim ntawv.

Thaum Lub Xya Hli 2020, Tebchaws Asmeskas Lub Chaw Tiv Thaiv thiab Tiv Thaiv Kab Mob tau tshaj tawm cov ntaub ntawv hais tias qib ntawm nitrosamine metabolite NNAL hauv cov zis ntawm cov neeg siv e-luam yeeb yog qis heev, uas zoo ib yam li qib NNAL hauv cov zis ntawm cov neeg tsis haus luam yeeb. .Qhov no tsis tsuas yog ua pov thawj tias qhov cuam tshuam tseem ceeb ntawm e-luam yeeb los ntawm Dr. Goniewicz txoj kev tshawb fawb, tab sis kuj qhia tau tias cov khoom lag luam e-luam yeeb tam sim no tsis muaj teeb meem ntawm cov pa luam yeeb thib ob ntawm luam yeeb.

Txoj kev tshawb no tau siv sijhawm li 7 xyoo thiab pib sau cov ntaub ntawv sib kis ntawm kev siv luam yeeb hauv xyoo 2013, suav nrog cov qauv siv, tus cwj pwm, cwj pwm, thiab kev noj qab haus huv.NNAL yog ib qho metabolite tsim los ntawm tib neeg lub cev ua nitrosamines.Cov neeg nqus tau nitrosamines los ntawm kev siv cov khoom luam yeeb lossis cov pa luam yeeb thib ob, thiab tom qab ntawd tso tawm cov metabolite NNAL los ntawm cov zis.

Cov txiaj ntsig ntawm txoj kev tshawb fawb qhia tau hais tias qhov nruab nrab ntawm NNAL nyob rau hauv cov zis ntawm cov neeg haus luam yeeb yog 285.4 ng / g creatinine, thiab qhov nruab nrab concentration ntawm NNAL nyob rau hauv cov zis ntawm cov neeg siv e-luam yeeb yog 6.3 ng / g creatinine, uas yog, cov ntsiab lus. ntawm NNAL hauv cov zis ntawm cov neeg siv e-luam yeeb tsuas yog cov neeg haus luam yeeb 2.2% ntawm tag nrho.