Captain Gh3y
Rhinorhondothackasaurus
http://news.bbc.co.uk/2/hi/programmes/6922379.stm
A single cannabis joint could damage the lungs as much as smoking up to five tobacco cigarettes one after another, scientists in New Zealand have said.
The research, published in the journal Thorax, found cannabis damaged the large airways in the lungs causing symptoms such as coughing and wheezing.
It also damaged the ability of the lungs to get oxygen to, and remove waste products from tissues.
Experts say the study confirms that the drug represents a serious health risk.