I came to the coral calcium forum seeking info on Cesium and cancer after hearing about it on Bob Barefoot's website last year. No one responded and finding first-hand info on the subject has been very difficult. Barefoot has made lots of claims for the alkalizing benefits of coral calcium, but there does not appear to be much activity on the subject here at Curezone. The article linked below was published recently on NewsWithViews.com. I am posting this for educational purposes only as I have no experience with the substance.
As the disclaimer on Curezone advises, always check with your medical doctor before trying anything you read on Curezone or linked to Curezone.