Has anyone ever heard what the opinion of legal medical users in Canada is about that Government grown pot? Trash is about the kindest thing I've heard! It is a lower potency strain, grown in a mine, for goodness sake, with chemical ferts and never flushed. It is stemmy and poor quality- so it doesn't surprise me that they got the results they did! Now if that had been some of our local California grass, it might have given quite different results!

And about the test itself- were the cigarettes the same size or weight? Tobacco companies "fluff" the tobacco by freeze-drying it, so they can use a tiny bit less in each cigarette. A joint and a cigarette of the same volume will not have the same weight! What strain of cannabis? Was the pot full of seeds and stems? Seeds are so oily that they must be giving off some "interesting" products of combustion.

And now for Granny's studies!

Cannabis and tobacco smoke are not equally carcinogenic
Cannabis and tobacco smoke are not equally carcinogenic

Smoking Marijuana Does Not Cause Lung Cancer
US: Web: Study: Smoking Marijuana Does Not Cause Lung Cancer

High anxieties - What the WHO doesn't want you to know about cannabis
High anxieties - What the WHO doesn't want you to know about cannabis - 21 February 1998 - New Scientist

Radioactive tobacco
Radioactive tobacco

There's more in the link below- scroll down to tobacco vs cannabis- it's near the end. - Granny:hippy: