Additionally, he also serves as the Sports Dietitian for the Pittsburgh Steelers. Darnell earned his Doctorate in Rehabilitation Science. He received his Bachelor's and Master's degrees in Clinical Dietetics and Nutrition at the University of Pittsburgh. He is a Registered Dietitian, Board Certified Specialist in Sports Dietetics, and Strength and Conditioning Coach Certified. His research interests include nutrition and exercise approaches for improved athletic performance, injury prevention, and rehabilitation.