e-Cigarette Aerosol Decreases Over Time In Smoke-Out Interval, Requiring Stronger Puffs
Stronger suction is required to smoke "electronic cigarettes" - marketed as tobacco-free nicotine delivery systems - than conventional brands, with possible adverse effects on human health, researchers at the University of California, Riverside report. The researchers used a smoking machine to compare the smoking properties of eight conventional cigarettes with five e-cigarette brands... Ref. Source 1