Quote Originally Posted by wilomn View Post
What source are you using to verify? Please provide it.
I will admit, i have never really looked at the references from people telling me that pine and cedar were bad. After you challenged my sources i decided that i would take a look at the scientific literature and see what i could find. One study by Ayars et al., 1989. (The toxicity of constituents of cedar and pine woods to pulmonary epithelium), shows that compounds in these woods have the ability to heavily damage tracheal and lung epithelial tissues. That being said, I could see how kiln dried pine and cedar may reduce that amounts of these compounds, as their boiling points are in the range of 200-300 degrees Celsius. This study was directed towards the issue of RIs developing in PEOPLE IN WOOD MILLS.

Another study conducted by Buddaraju and Van :cens0r::cens0r::cens0r::cens0r:, 2003 showed that pine bedding causes an alteration of liver enzyme levels in rats, and this will have implications on drug metabolism and endocytosis (may have an implication on immune function?).

I actually also found one study saying that pine, cedar, and carefresh all had no negative effects on mice.. maybe kiln dried pine isnt so bad after all