getting sick from smoking cigarettes Cigarette weakens your immune system and increases your risk for respiratory infections. For free help to quit smoking visit CDC.gov/quit Cigarette Smoking | Smoking and

After around 20 minutes the nicotine in your bloodstream will lead to your blood pressure and pulse increasing, and your sense of smell is reduced

16 / 17 Bad Breath Unbrushed teeth have food particles around them that promote bacteria and cause bad breath

Because all tobacco smokers were aged older than 50 years, researchers also conducted additional age- and sex-matched subgroup analyses that included 30 marijuana smokers (23 men), 33 tobacco-only smokers (18 men) and 29 nonsmokers (17 men)

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