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For tobacco flavor specifically, nic salts let the actual tobacco taste come through rather than getting masked by harshness

It can also reduce the success rates of dental treatments, such as dental implants, root canals, and periodontal surgeries

American Journal of Public Health 103(6): 1052-1057

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Social opportunities: creating anti-smoking norms and environments Participants identified a range of strategies to reduce adolescents social opportunities to smoke, centred around three key areas: banning staff smoking in schools, promoting non-smoking role models, and harnessing positive peer influence