Nicotine by itself is colourless, but when it combines with oxygen, it turns yellow and leaves stubborn traces on the teeth.

Ever looked in the mirror and noticed your teeth aren’t as white as they used to be? If you’re a smoker, that’s just the beginning of what tobacco is doing to your mouth. Sure, you’ve ...

This happens because smoking causes inflammation around the teeth and increases your risk for bacterial infections. The gums may become swollen and bleed (gingivitis) and eventually begin to pull ...