The CDC reported a slight increase in cigarettes sales in 2015, writes MedPage Today. 

In an interview with MedPage Today, Marynak said the increase in convenience store cigarette sales in 2015 does not necessarily mean that more people are smoking. Instead, it may indicate that people who already smoke are buying more cigarettes.

The sales figures for convenience stores — as well as supermarkets, pharmacies, mass merchandisers, “dollar stores,” club stores, and U.S. military commissaries — were derived from retail scanner data collected by the Nielsen Company from September 25, 2011 through January 9, 2016.

Marynak noted that declining gasoline prices in 2015 may have contributed to the slight increase in cigarette sales in 2015.

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