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Description
Supari paan , another variety of white leaf, Mitha paan , a sweet variety, and Sanchi paan are common varieties of betel leaves

Reynolds and Lorillard have progressively engineered their cigarettes to make them not only easier to smoke but to deliver more of their key addictive ingredient: nicotine

WHO (2018)

Smoking-associated DNA methylation sites were associated with more than 7,000 genes, or one-third of known human genes
