WALTHAM, Mass.--(BUSINESS WIRE)--Sept. 7, 2006--Interleukin Genetics, Inc. (AMEX:ILI) announced today that it has initiated a study in collaboration with Yonsei University in Seoul, Korea to explore the potential link between interleukin-1 (IL-1) gene variations and spine (vertebral) fractures in postmenopausal Korean women.