I have been smoking for about 23 years. Not heavy though. Sometimes I take 30 day breaks or longer.

I recently had a CT scan for clearance to work abroad.

I was very curious what it would reveal.

After reveiwing the films taken with the Radiologist he assured me my lungs appeared in good health as they showed complete white. He said they look normal and wondered why I was concerned when I told him I dont smoke cigarettes.

But this is not to say there is no residue there.

I think the body has the ability to absorb these tars and process them through the liver. It is a very, very slow process however.

If you smoke anything it is imperative to increase your vitamin c intake to protect the linings of the lungs. Enter (ascorbic acid smoking) in your search box. There is a ton of support for this.

Ascorbic acid will promote strong collagen bonds in the lungs/skin as well as arterial strength.

The usrda of 60mg of ascorbic is ridiculuous. People who smoke anything definently need to supplement higher than this threshold-of-scurvy amount.

I would say a minimum of 2 grams of ascorbic per day, divided 4 times a day.

Moderation is the key when smoking.

Of course if you smoke a ton of weed your likely to get some adverse effect in the lungs and you probably will see results on a lung scan.

I think if there was a cancer connection it would have been known by now with the 60s generation of those who smoked weed only and not cigarettes.

There is a link on this section, "MSNBC no link to cancer and marijuana".