>Is it possible that you're describing fructose intolerance?  These
 >particular foods have concentrated high amounts.

Theola might be on to something.  I get the same crippling pain and I can
hardly breathe when I drink certain drinks (e.g., vodka and cranberry
juice).  I thought it might be sugar overload at first, but I get terrible
digestive problems when I eat fruit and I usually end up fatigued with a
foggy head and muscles made of lead.  Removing the fruit from my diet made
me much happier and bouncier, and I no longer get the  chest pains and lack
of breath - even if I drink potato vodka, or gin and club soda all night
long (which I rarely do).

But it could also be other things: sugar overload, salicylate intolerance,
etc.  Fructose intolerance is simply my best guess at the moment, but sugar
overload is a close second.  I guess fruit juice is extremely concentrated
in quickly absorbed sugars, so it could be either or possibly a combination.

Does anyone have any idea why sugar overload or fructose intolerance might
cause intense chest pains?

Katrina.