Many constituents are mutagens and carcinogenic such as alkenes, nitrosamines, polynuclear aromatic and heterocyclic hydrocarbons, amines .

• 烟草的很多成分都会引起有机体突变以及致癌；如烯烃化合物；亚硝胺；多核芳香烃以及多环碳氢化合物和铵.