High Homocysteine -- This is associated with Nutrimed labs who are probably pushing their products so use some caution.  I have not reviewed this in detail, but they cite journal articles and it seemed to provide accurate information.  It includes a description of homocysteine, medical complications thought to be associated with homocysteine, and treatment options. 

Heart Risk Evaluation -- The Heart Risk Evaluations web page is a rich source of heart-healthy information.  It is designed to be very educational and to produce changes that will lead to increased cardiovascular health that ultimately causes a reduction in cardiac events.