21 cigarettes Raise the smoking age Not 21? No ID? No

References Florisa-Leila Ramos

Some countries have a national legal age, but individual states or provinces are allowed to set legal ages that are higher

Found enough ideas on YouTube, however

Currency Exchange Rates: If cigarettes are imported into Newfoundland from other countries, exchange rate fluctuations can affect the cost of importing, which may then be passed on to consumers

Among men, the pooled relative risk for coronary heart disease was 1.48 for smoking one cigarette per day and 2.04 for 20 cigarettes per day, using all studies, but 1.74 and 2.27 among studies in which the relative risk had been adjusted for multiple confounders