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2. Health effects of tobacco - Wikipedia

   en.wikipedia.org/wiki/Health_effects_of_tobacco

   It is believed that smoking increases the risk of these and other pulmonary and respiratory tract infections both through structural damage and through effects on the immune system. The effects on the immune system include an increase in CD4+ cell production attributable to nicotine, which has tentatively been linked to increased HIV ...

3. Smoker's macrophages - Wikipedia

   en.wikipedia.org/wiki/Smoker's_macrophages

   The increasing iron exposure in the lung and airway affects both respiratory and systemic iron homeostasis by modifying cellular response. Although direct etiologic link has not been established, there is a 4-fold increase in intracellular iron level and a concomitant iron release observed in smoker’s macrophage.

4. 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.

5. Smoking’s effects on the immune system can last years ... - AOL

   www.aol.com/smoking-effects-immune-system-last...

   Smoking tobacco is so harmful to the body that it changes a person’s immune system, leaving them vulnerable to more disease and infection even years after they’ve quit, a new study found.

6. Emphysema - Wikipedia

   en.wikipedia.org/wiki/Emphysema

   Emphysema is a respiratory disease of the lower respiratory tract. [7] It is commonly caused by tobacco smoking but some people are affected who have never smoked. [14] The presence of emphysema is a clear risk factor for lung cancer, made stronger in those who smoke. [20] Early symptoms of emphysema vary.

7. Tobacco harm reduction - Wikipedia

   en.wikipedia.org/wiki/Tobacco_harm_reduction

   The consumption of tobacco products and its harmful effects affect both smokers and non-smokers, [9] and is a major risk factor for six of the eight leading causes of deaths in the world, including respiratory diseases, cardiovascular diseases, cerebrovascular diseases, periodontal diseases, teeth decay and loss, over 20 different types or subtypes of cancers, strokes, several debilitating ...