I never thought of that. I used give blood but was turned down about 2/3s of the time due to low iron. Now that I think of it, I havent have low iron since removal over two years ago! I have even had high enough iron to give blood during my period so must be doing ok. Also, my low energy and pains went away shortly after removal of 8 fillings, one root canal, and 4 cavitations (two werent bad). I recommend to have it done to everyone! I feel in my 20s again (Im almost 45!) Danielle