can smoking one cigarette a day cause cancer Health Effects of on Your Body Smoking One Pack of Cigarettes
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This lowers oxygen delivery to other organs of the body, leading to shortness of breath, fatigue, and dizziness

Storys method is experiment, or more technically, causal speculation, which requires the past/present/future of this causes that. Or: What if

The cost of a nicotine test depends on the type of test, such as hair, blood, urine, or saliva
(direct link to download .xlsx file) "Featured Datasets / Tobacco Use Among Adults By Age Group (National Adult Tobacco Survey, NATS)"
