This article explains how smoking cannabis (weed) harms the mouth.

5 effects on the mouth

1. Dry mouth. Less saliva (spit) means teeth are not protected. Regular users get more decay.
2. Hunger. People eat more junk food. With a dry mouth, this means more decay.
3. Stains and less self-care. Teeth get stained. Many users brush less.
4. Gum disease and thrush. Smoke irritates the mouth and weakens the body’s defences. Gum disease can lead to tooth loss.
5. Mouth cancer. The risk is much higher, like with tobacco.

Getting help

Your dental professional can help with your mouth. For help with drug use, contact a service like ADIS (Alcohol and Drug Information Service) or a similar service near you.