My first 6 day DMSA chelator got rid of my wierd heart sensations. My kidneys were hurting so I stopped. I started again with a lower dose and using Dr. Cutler's protocol. [earlier post] Now I noticed that my brain fog is better. I feel like I can drive again with out getting lost. Cool. I also was able to download my Hair analysis results: Antimony 4.1X Higher than max for a healthy person Arsenic 1.1X "" Cadmium 4.4X Lead 4.3X Mercury 0.2X Mercury was lower than I expected DMSA chelates all of these out! ALA removes Arsenic and Antimony EDTA removes Lead, Arsenic and Antimony Hey, I'm one step closer to finding my Root Cause. I'm not sure how I got all these...that would truly be the root cause. I'm eating as much organic and fresh foods as possible. I would encourage every CFS person to get a hair analysis. They run ~$60. I got mine from 1to1vitamins.