does katy perry smoke cigarettes via IG: “Quit all nicotine 2 months ago, highly rec this more organic energy alt” Katy Perry guzzles champagne on

A pack a day (25 cigarettes) habit costs $70 a week on an average, and adds up to more than $3,500 per year

E-Cigarette: Electronic device that heats e-liquid containing nicotine into a vapour that is inhaled by the user

Combining the nicotine patch with another NRT product (gum, lozenge, spray or inhaler) can increase your chance of quitting compared with using a single product

181047, ideal for cigarettes or cigarillos

The Cochrane Review team found irritation of the throat and mouth are the most common side-effect of electronic cigarette use, also known as vaping but most studies have only followed users for about two years

Cigarette smoking has halved since 2007, when daily smokers made up 22 percent of the population