Information and opinions on High Blood Pressure from Apalia at HighBloodPressureConnection.com. The HealthCentral Network, Inc. (www.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/high-blood-pressure/c/68947 http://www.healthcentral.com/high-blood-pressure/c/68947/rss self application/xml en-us 15 120 19 http://www.healthcentral.com/images/hc_logo_sm.gif http://www.healthcentral.com/high-blood-pressure/c/68947 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