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Hello! I have a genetic condition, Hemochromatosis, which got diagnosed last year. In order to lower my blood ferretin I need to go to the doctor every month to get a bloodlet of about 500ml. Sometimes its all good and dandy, but more than half of the times afterwards I feel like I'm going to faint and feel pretty weak and dizzy, even though i make sure to eat and drink beforehand and stay seated for a while after the bloodlet. I'm sure part of that is also a psychological/psychosomatic effect because I half except it to happen. But I was wondering if you had any tips of how I could behave before/after the bloodlet to make it feel less awful, or if there is any food/drink thats known to be good to consume before a blood donation. Or if it would make sense to do more cardio oder something like that, or if there is something that I could that would have a good influence.