Repetitive chewing motions, like chomping gum or biting your nails, put too much strain on the jaw.
To date, there are more than 2,000 cases in 49 states of e-cigarette, or vaping, product use-associated lung injury (EVALI), and 42 deaths have been confirmed in 24 states, according to the Centers for Disease Control and Prevention (CDC)
A study of more than 13,000 people with cancer yielded further evidence that quitting smoking soon after diagnosis can considerably prolong survival
Specificity is the test's ability to correctly identify nicotine without interference from other compounds, ensuring accurate results
Public Health England suggests these products carry a fraction of smoking's risk and every year could be contributing to between 22,000 and 57,000 people quitting smoking