First of all, you can only change the Ph of your urine. The only other Ph that can change is the ph of your saliva due to the presence of bacteria. If your Blood Ph changed even one either alkaline of acidic you would be dead before you could swallow one coral pill. Secondly the man who got that nobel prize is appalled that he is being used for this coral calcium stuff he does not agree with it.
Third coral calcium is not eco friendly despite what the labels say, when asked to provide certification that they were not harming the reefs none could be provided, and coral calcium is not sold in wild oats or whole foods markets. THird things is that many of the coral supplements are full of heavy metals. Did you ever stop to think also that the okinawa is right below where the atom bomb was dropped, radiation does not go away for over ten thousand years, makes ya wonder. Did you read the original centarian study, it stated that the people on okinawa consumed less calcium then americans do, you should read that study instead of just blindly believing the lies barefoot tells.