Tobacco products are highly addictive, and consuming tobacco contributes to many diseases. Global evidence show that nicotine dependence symptoms can manifest soon after onset in some adolescents, often well before daily or even increasing cigarette excise taxes that increase cigarette prices reduces the initiation of daily smoking in Mexico. The largest reduction in daily smoking prevalence due to increasing prices would occur among youth, the poor, and women, since these groups are more sensitive to price changes. Daily smoking prevalence increases with wealth and is higher for men than for women. Price increases delay the age of daily smoking initiation, and this impact is higher for women than for men. Delaying the age at which individuals start smoking makes initiation itself less likely, as fewer people initiate as they get older.