We resent a Personalized Health Information Generation and Delivery System that leverages case based reasoning techniques to dynamically author a Personalized Health Information Package based on an individual ?s current health rofile.The work features a compositional adaptation approach,whereby relevant health information elements from the solution component of multiple similar past cases are carefully selected and systematically combined to yield a new ersonalized health information ackage.We have im lemented a generic Java-based case based reasoning engine that applies a novel compositional adaptation algorithm to author a HTML-based ersonalized health information package that can be emailed to users.