Wow, a lot of excellent information here! I'm going to need to print it all up just to help retain it all. I definitely knew that both selenium and folic acid were great for cancer prevention, but didn't have this much detail information on how, why, and some additional findings. It definitely makes you think twice about your diet as well. The difficulty with something like selenium, is that so much of the soil foods are grown in are now selenium deficient, so the only way to get enough is to take a supplement. And I've also read that folic acid can actually be better absorbed when taken as a supplement than when obtained through diet alone. Makes one think about the supplements they take as well. Makes me happy I take supplements regularly.