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www.livestrong.com/article/166968-why-do-people-pass-out-while-giving-blood

Mar 13, 2014 ... Because donation involves the removal of blood from the circulatory system, some people pass out while giving blood or after the blood ...

www.verekeskus.ee/en/donate-blood/if-you-feel-faint-while-giving-blood

Fainting while giving blood is usually caused by psychological factors, however. ... do exercises using your muscles: cross your legs, tense your muscles all over ...

www.eurekalert.org/pub_releases/1996-07/OU-RPWW-210796.php

Jul 21, 1996 ... Researchers Predict Who Will Feel Faint While Giving Blood ... the best way to do that is to improve their donation experience," France said.

ask.metafilter.com/266043/Help-me-not-faint-when-donating-blood

I would really like to donate blood regularly. Is there anything else I can try? Does everyone pass out when donating, and they're just toughing it ...

www.newhealthadvisor.com/fainting-after-giving-blood.html

Why Do You Feel Faint After Giving Blood? When you give blood, your overall volume of blood will decrease, which will cause a sudden drop in your blood ...

www.physicsforums.com/threads/why-do-people-faint-when-getting-blood-drawn.252438

The cause of the fainting itself is low blood pressure due to dilated blood ... They always give orange juice in these situations, which is a blood ...

boards.straightdope.com/sdmb/showthread.php?t=198589

Went to a blood drive earlier this week, and nearly fainted afterwards while everyone else was just fine. Why? I wasn't nervous and ...

www.quora.com/Why-do-people-pass-out-from-giving-blood-after-they-have-fasted

I've worked in a blood bank. Not many people passed out while i worked there, it's quite rare, but for those who do, not eating/drinking enough (normal amounts) was ...

forums.digitalspy.com/discussion/675676/fainting-after-blood-donating

Fainted before it (in the waiting room) and was told to go home. :( :( I've never been back again, though giving blood is an excellent thing to do ...

www.redcrossblood.org/donating-blood/donation-process/donation-process-safety

Feeling faint or fatigued after donating blood is uncommon. If it occurs, it most likely will pass in a matter of hours. Most donors feel fine before and after donating, ...