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Lowering the nicotine concentration in vapes can lead to users taking longer, bigger puffs, potentially increasing their exposure to other toxic substances in the vapes in the short term, according to US research. The study found that when people who preferred using a 5% nicotine device were switched to a 3% or 2.4% nicotine device, their puffing time, puff duration and total inhaled volume were larger. The researchers say that a partial nicotine reduction was linked to people compensating by changing their puffing behaviour which has the potential for increased exposure to toxicants. The researchers say the reduced nicotine delivery might still be beneficial due to the marketing of less addictive e-cigarettes.
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