HSPH provides an excellent setting for this training program because of its long record in the study of both cancer etiology and population change. This educational program also draws on diverse research opportunities within the Dana-Farber/Harvard Cancer Center (DF/HCC), a matrix cancer center representing cancer research across seven Harvard-affiliated institutions. This work has included major developments in the area of diet and cancer, led by Dr.Walter Willett, who was the Principal Investigator for this education program during its first nine years of funding. This Program is now led by Dr. Glorian Sorensen, who provides leadership and direction for community-based cancer prevention interventions at HSPH and the DF/HCC.