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  2. Tar (tobacco residue) - Wikipedia

    en.wikipedia.org/wiki/Tar_(tobacco_residue)

    Second-hand smoking (SHS) is a combination of sidestream smoke (i.e., smoke emitted from the burning cigarette, pipe, or cigar) and the mainstream smoke exhaled from the lungs of smokers. It contains more than 4,000 chemicals, many of which are known to affect health.

  3. Health effects of tobacco - Wikipedia

    en.wikipedia.org/wiki/Health_effects_of_tobacco

    Second-hand smoke is a mixture of smoke from the burning end of a cigarette, pipe or cigar, and the smoke exhaled from the lungs of smokers. It is involuntarily inhaled, lingers in the air hours after cigarettes have been extinguished, and may cause a wide range of adverse health effects, including cancer, respiratory infections, and asthma. [254]

  4. Tobacco smoke - Wikipedia

    en.wikipedia.org/wiki/Tobacco_smoke

    Tobacco smoke, besides being an irritant and significant indoor air pollutant, is known to cause lung cancer, heart disease, chronic obstructive pulmonary disease (COPD), emphysema, and other serious diseases in smokers (and in non-smokers as well). The actual mechanisms by which smoking can cause so many diseases remain largely unknown.

  5. New lung cancer screening guidelines include heavy smokers ...

    www.aol.com/lung-cancer-screening-guidelines...

    More than 80% of people whose lung cancer was caught early through screening were still alive after 20 years, according to research from the Icahn School of Medicine at Mount Sinai in New York ...

  6. Smoking - Wikipedia

    en.wikipedia.org/wiki/Smoking

    Smoking is a practice in which a substance is combusted and the resulting smoke is typically inhaled to be tasted and absorbed into the bloodstream of a person. Most commonly, the substance used is the dried leaves of the tobacco plant, which have been rolled with a small rectangle of paper into an elongated cylinder called a cigarette.

  7. More older former smokers need lung cancer screening, experts say

    www.aol.com/news/more-older-former-smokers-lung...

    The lung cancer risk to former smokers does decrease over time when compared with similar people who continue to smoke. When compared with never-smokers, however, their risks remain three times ...

  8. Vaping immediately affects vascular health and oxygen levels ...

    www.aol.com/news/vaping-immediately-affects...

    Dr. Albert Rizzo, chief medical officer for the American Lung Association, says the new research adds to the growing body of evidence showing that vaping exposes people to a lot more than harmless ...

  9. Smoke inhalation - Wikipedia

    en.wikipedia.org/wiki/Smoke_inhalation

    Smoke inhalation is the breathing in of harmful fumes (produced as by-products of combusting substances) through the respiratory tract. [1] This can cause smoke inhalation injury (subtype of acute inhalation injury) which is damage to the respiratory tract caused by chemical and/or heat exposure, as well as possible systemic toxicity after smoke inhalation.