I've read so many stories about chelation, but every story I have read involves someone who is going through the chelation process but is not yet better. Is there any scientific cases of a successful improvement in health after the chelation process?

I ask this because I'm about to begin the process myself, but I feel disheartened at the amount of stories that I have read of people who have been on the process for 2+ years and have still not seen improvements.