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Smoking is related to pancreatic fibrosis in humans

However, while HEPA filters trap most smoke particles, they cannot remove all of them, especially ultrafine particles smaller than 0.3 microns

Last but not least, nicotine, the very substance that frequently causes anti-tobacco campaigners to break out in fits of rage, may have certain medical benefits after all

Nonetheless, the doctor acknowledged that quitting smoking can be no easy task, saying: "It's very, very important for us as clinicians to acknowledge that it's a lot easier said than done."

Understanding the health risks associated with tobacco as well as the changes in smoking laws mean that smoking is portrayed more on screen than in real life