Well, for something to be radioactive means for it to be in a highly "excited" state. This means that the electrons have a great deal of Energy.

Now then, you can tell that radiation means that something [namely, Energy of some form...being Gamma Radiation, etc...ElectroMagnetic waves of some type, in other words] is radiating. So, that means that these high energy photons [packets of EM radiation] are being emitted by the nuclear substance.

When these photons/waves interact with your cells, they transfer some of their own energy to your cells. This causes the electrons in your cells to jump to higher energy states. So, you have abnormal energy levels in your cells, leading to anamolies. These anamolies are cancers.

Simple enough, eh? hehe

That's just based on my own understanding, but you may be able to find out more from a Biologist instead of a Physicist.

__________________

I've officially retired from ZU, guys. I left loving this place, and I enjoyed the company of so many of you. Thank you for sharing with me, and I hope that in some way I've touched your lives (hopefully for the better and to God's glory). In Jesus' name, I end this chapter and open another! -BBD+
(and just for old times' sake...) :0( :0o :0S :0P'' ;0) ()_(); *_* >_> <_< o_O :0| :0\ :0O :09 and finally :0)