SAMHSA on Twitter: "#DYK: Marijuana smoke deposits 4X more tar in the lungs and contains 50%–70% more cancer-causing substances than tobacco smoke. Learn about the dangerous health consequences linked to youth marijuana
SAMHSA on Twitter: "#DYK: Marijuana smoke deposits 4X more tar in the lungs and contains 50%–70% more cancer-causing substances than tobacco smoke. Learn about the dangerous health consequences linked to youth marijuana
![Young cannabis users 'do not realise the huge danger to their health' | The Independent | The Independent Young cannabis users 'do not realise the huge danger to their health' | The Independent | The Independent](https://static.independent.co.uk/s3fs-public/thumbnails/image/2011/11/14/20/Pg-25-drugs-epa.jpg?quality=75&width=1200&auto=webp)