| Imported post
This really is Steve W's field, but, my understanding, and this comes from floating about on the periphery of the field is that over the last few years it has been discovered that by subjecting the body to high PPO2's i.e. breathing O2 at pressure has led to some fairly miraculous results in certain diseases, and in the treatment of burns, there is some research currently in Cancer Research with surprising results.
O2 itself is fundimentally toxic, it is what causes us to age, but Steve W can add more to this line.
What Bob say's is correct, for diving we are concerned with CNS toxisity, this can cause a seizure and thus drowning. This being said, damage can be caused to the lung tissues due to low presures of O2 but as long as we are aware of this and pay it respect we can ignore it for diving.
Andrew
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