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The hidden dangers: e-cigarettes, heated tobacco, and their impact on oxidative stress and atherosclerosis-a systematic review and narrative synthesis of the evidence

Though dozens of chemical air fresheners are for sale, most contain toxic substances and harmful propellants

Polonium is of little use to humans, with the exception of some menacing applications: It was used as a trigger in the first atomic bomb and is also a suspected poison in a couple of high-profile deaths

Nicotine is the main addictive substance in both tobacco and vaping products, used for the pleasurable and calming feelings it produces in the brain

Chemical and Biological Factors: Chemical and biological factors refer to the effects of nicotine on the brain and body