The exclusion criteria included the use of other forms of tobacco, dual users (current, simultaneous use of conventional cigarettes and HTPs products), history of alcohol consumption, participants with a history of upper respiratory infections within the past three weeks, sinonasal disorders (nasal polyps, chronic rhinosinusitis, allergic rhinitis, severe septum deviation), a history of exposure to respiratory toxins other than cigarettes, malignancy, head trauma, neurologic, endocrine, and psychiatric disorders
One option is to use a whitening toothpaste or mouthwash
The WHO has a whole booklet on their website which contains details of how the tobacco industry (in the opinion of WHO) is influencing policy-making on the use of tobacco
Closed (4) Photos I love this vape shop