i had heard an explanation that made more sense for my experience, although both may have a lot of truth to them.
i heard that the hair actually comes out from the roots (i have checked mine repeatedly and they are always intact hairs with roots attached), and that the growth cycle of hair includes prophase (growth) and anaphase (death) and that we have a certain percent of our hairs in each phase at any time, but a major stressor can kick an abnormal amount of hair into anaphase at once (surgery, major diet change), and that it does not fall out then, but when the new hair starts to grow in (prophase begins again) then the old hair is pushed out of the shaft and we 'shed'.
i guess i buy this explanation more because all my roots are intact, but like i said, i bet both are somewhat true.
VSG 5/17/10 HW 298 GW 145 CW 143
"Shame is the lie someone told you about yourself." Anais Nin