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This harm-reduction hypothesis has been supported by studies of e-cigarette vapors, which have shown lower toxicant levels per puff compared to tobacco smoke.1 Long-term data on the harms from e-cigarette use are not currently available
But an especially troubling fact: That number is double what it was just one year earlier
Several mechanisms have been proposed to explain the increased odds of COPD in e-cigarette users
Serotonin is a neurotransmitter often referred to as the "feel-good" chemical because of its role in promoting feelings of well-being and happiness
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