The Health Policy Special Interest Group will have a wide-ranging discussion about its members' work in the area of chronic illness.  Topics will include diabetes, mental illness, cardiovascular disease (CVD)and its risk factors, and health planning as it relates to chronic illness.  Members will discuss their experience in applying SD in these areas, new insights developed as a result of using SD and impact that was achieved, and further opportunities they see for SD to help improve thinking and policymaking about chronic illness.  The session will conclude with a very brief HPSIG business meeting.  All interested ISDC attendees are encouraged to join us!