Does giving blood make you anemic?

Sometimes!: When you request to donate your blood, blood bank services first checks your blood count to make sure you are not anemic. Donating blood will cause your blood count to drop but if you are healthy you should not technically become "anemic." i.E below normal threshold. If you donate your blood very often, you may become anemic or iron deficient, and they may not let you donate for a while!

Blood donation....: By definition, is a source of blood loss, and its impact depends on your hematocrit (hct) at the start of donation and how much is removed. Assuming you start at a mean hct for age and sex, a unit donation brings you near the lower range of normal, which may cause you to feel fatigue, but is generally tolerable. Of equal import is the fe loss. Spacing donations and fe replete diet are important.