In 2019, a federal survey showed more than 48 million people ages 12 and older reported using marijuana at least once nearly double the number in 2002
TAR IN CIGARETTES The sticky brown substance, known as tar, collects in the lungs when tobacco smoke is inhaled, causing staining of teeth and fingers and containing harmful chemicals that increase the risk of serious lung diseases
DNA ADDUCT A covalent binding product of a carcinogen or related substance or its metabolite to DNA
When thirdhand smoke is touched, ingested, or inhaled it can cause a range of health problems and is linked to cancer, heart disease, and respiratory illnesses
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