On this episode of the Mayo Clinic Radio program, Dr. Shreyasee Amin, a rheumatologist at Mayo Clinic, covers osteoarthritis diagnosis, treatment and prevention. Also on the program, January is American Blood Donor Month. Dr. Justin Kreuter, medical director of the Blood Donor Program at Mayo Clinic in Rochester, discusses the continuous need for blood donors. And Thomas Rieck, an exercise specialist at the Mayo Clinic Healthy Living Program, offers tips to help you get exercising in the new year.