Dr. Kim has worked on several projects investigating age-related bone loss. He also discovered that anti-aging FoxO transcription factors restrain osteoclastogenesis and bone resorption by attenuating H2O2 accumulation. His recent work led to the seminal finding that cellular senescence of osteoprogenitors and osteocytes causes age-related bone loss. The skills and knowledge were acquired during his research on bone metabolism and have laid the foundation for him to begin his work as a junior faculty member in the Division of Endocrinology.