On Sun, 29 Jul 2012 13:56:32 -0400, "Stormin Mormon"
wrote:

Bloody nose can also be from calcium shortage.

It can also be from thin arteries or arteries very close to the surface in the
nose[*]. When I was younger, a little head cold would do it for me. It's
really only been ten years, or so, that I haven't gotten fairly regular nose
bleeds.
[*] or perhaps even a (too) close encounter with a fist. ;-) I used to turn
other kid's shirts red.