While other businesses could enter an oligopoly, it is more likely that investors would seek to enter a niche with open competition rather than trying to break into a market that is already controlled by a few major players
Evidence shows that countries, where smoking is decreasing fastest, occur where THR use is increasing and displacing cigarettes and that the quality of evidence related to reduced exposure, reduced harm and modelled long term benefits of THR has strengthened rapidly
Nicotine, Stress, and Sleep Nicotine use may temporarily relieve stress, but it also increases heart rate, blood pressure, and cortisol levels , which are associated with heightened physiological arousal
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