Replies

The subject is more complicated than you think. Biologically, there are risks and harms due to the acute toxicity of high doses, while there is another class of risks and harms due to chronic or recurrent low dose exposure. In addition, mixtures of noxious chemicals such as those in cigarette and other other smoke imposes a cumulative burden based on their total effects in addition to the burden of the worst of any single component. Finally, susceptibility and sensitivity vary by age, physical condition, and individual make-up, which includes possible allergies to mere traces. Thus, in public venues, adverse effects on children, the elderly, or on one in a thousand otherwise healthy adults may be enough to justify changes in public policy.

If any of that hogwash you said was even close to true,theyd never live even in their own homes.

Every so called chemical in tobacco smoke is also in the natural air everyone breathes everyday. In fact on average your daily smoking chemical dose from the natural air equals about 14-15 packs a day..........You cannot escape the chemicals or the doses they are to small to even matter.

Perhaps you would rather just outlaw yourselves and all the other human carcinogen machines from even existing! Or the New Building VOC’s that release constantly in new buildings that also can create a cancer risk. He should also want to ban Cooking,Campfires, Industrial output, Barbecuing,Breathing,having indoor plants that release constant Isoprene! You see no matter the contempt and daily scares these folks toss out you will never escape natural elements and chemicals such as whats in tobacco smoke or the normal everyday air we all breathe and exhale. We are all sources of the same thing these prohibitionists are trying to outlaw and criminalize!

NIH report on carcinogens

If you want to learn about which chemicals cause cancer, or just want to feel more paranoid about getting cancer, check out the 2012 NIH report on carcinogens.

One of the more exciting findings is that human beings themselves are possible carcinogens, by virtue of their natural emissions of isoprene:

Isoprene is formed endogenously in humans at a rate of 0.15 µmol/kg
of body weight per hour, equivalent to approximately 2 to 4 mg/kg per
day (Taalman 1996), and is the major hydrocarbon in human breath
(accounting for up to 70% of exhaled hydrocarbons)

Don’t breathe on me!

Natural occurrences[edit]

Isoprene is produced and emitted by many species of trees into the atmosphere (major producers are oaks, poplars, eucalyptus, and some legumes). The yearly production of isoprene emissions by vegetation is around 600 million tonnes, with half that coming from tropical broadleaf trees and the remainder coming from shrubs.[1] This is about equivalent to methane emission into the atmosphere and accounts for ~1/3 of all hydrocarbons released into the atmosphere.