H2O2 & Tumors

Here's some interesting research on how the immune system is stimulated by H2O2.  Tumors and wounds release H2O2. 

A frequent cliche I've heard many times by LNT-deniers is that radiation stimulates the immune system and therefore radiation is beneficial.  They fail to realize that stimulating the immune system can also be detrimental.  Inflammation has been associated with carcinogenesis.

This article links cancer, inflammation and aging.  It doesn't make the strong link between inflammation and cancer, as the link above does, as it is focused more on aging and senescent cells.