Information and opinions on health from Apalia at HealthCentral.com. HealthCentral.com is one of the top health destinations on the Web, with more than 35 condition-specific, wellness and general health Web properties. http://www.healthcentral.com/profiles/c/68947/index http://www.healthcentral.com/profiles/c/68947/rss self application/xml en-us 15 120 19 http://www.healthcentral.com/images/hc_logo_sm.gif http://www.healthcentral.com/profiles/c/68947/index http://www.healthcentral.com/high-blood-pressure/c/68947/25052/low Sun, 13 Apr 2008 23:53:00 -0400 Apalia My comment is twofold. First, I am wondering if I have low blood volume. I cannot donate blood due to passing out at about the 1/2 pint range. I am not nervous about giving blood but each of the several times I've tried to donate, I get different degrees of almost passing out with the last try passing out cold. However, I have high blood pressure without medication. Just read an article that says low blood volume could be a cause of... http://www.healthcentral.com/high-blood-pressure/c/68947/25052/low