question: Hello. I am a teenager and have been having quite bad dizzy spells nearly everytime I stand up. I am healthy and have no other problems. I don t believe that I am standing up too fast but maybe I am. My vision blacks out when I stand up as well and I am forced to lean heavily on something. I am just wondering if there is any other besides being anemic that might explain this. This has been going on for several months now. Thank you.