Chrisy, as stated before...Don't use it all day long.
I just smoke it in the evening and most of the time two during the evening and one before going to sleep, in bed, with a book and a glass of hot milk. Nothing nicer than that.
As far as health concerns, I am in an 'ideal' situation here, because of a failed surgery in which the 'good' surgeon failed to cut my nerves down well enough. So that I am in constant pain at that place. The Marijuana eases this coming and going of pain waves down. I can assure you that it is certainly NOT funny to live with this.
And it is no lame excuse to use Marijuana, for I used it before also. But it DOES help, believe me.
On prescription, you can get that (expensive) pill, but you have to pay for it yourself. The insurance doesn't have it in its pocket yet. And I prefer the Herb, not a pill. I hate medication.
I am stuck to medication to ease that stupid pain down and I really hate it. The medication doesn't help that well and the use of Marijuana with it, makes it bearable.
I know a lot of cases, diseases, in which the Marijuana brings relief and these humans only use it for their pain. I could work with the pain, just becsause the MJ made me feel better in easing that everlasting pain down.
As far as tobacco goes, that is for everybody him/herself to decide. An inhalor is better for your health. But hey, even the air you breath is not so healthy now a days...