{{Genotype
|rsid=1051730
|allele1=C
|allele2=C
|magnitude=2
|repute=Good
|summary=Smokes normal (lower) number of cigarettes if a smoker. 
}}
Less nicotine dependence. Also smokes each cigarette less deeply. Therefore there is a reduced risk of lung cancer and a reduced (0.8x) risk of Peripheral Artery Disease. This doesn't affect whether people start smoking though.