Marijuana causing cancer

from the article:

People in the highest category were smoking multiple joints per day, not 5 per month. If the person had been smoking for 10 years, thats 6 joints per day for a period of 10 years to make 60 joint-years. Some people in this group probably smoked half a pack to 2 packs worth of joints a day.

Come to think of it, how much incense can you burn inside a normal apartment or room before the smoke poses a health risk? Or would other factors, such as oxygen consumption become a problem first?

Breathing ANY smoke is a “health risk”- now, how much incense before it becomes a significant risk is another thing- one that I doubt has been studied.

I certainly wouldn’t burn incense around small children, in any case.

One that I doubted hadn’t been studied. Google is your friend. There’s more, but I’m sure everyone can use google here.
Hasn’t this thread been revived enough?