Researchers suggest 54% of horses in the U.S. are overweight or obese, putting them at a higher risk of developing other health problems, such as metabolic issues and joint pain. However, horses might become underweight due to gastrointestinal problems, such as gastric ulcers, or chronic health challenges. Regardless of whether a horse is under- or overweight, the underlying cause is usually an imbalance between the supply of energy the horse receives and the energy he expends. The first step in managing your horse’s weight is to determine his body condition score and work with an equine nutritionist to develop a nutrition plan to meet his needs. Tune in to learn how to manage your horse’s weight whether he is over- or underweight.  This podcast is brought to you by Purina Animal Nutrition. About the Experts: Patty Graham-Thiers, PhD, has 30 years of experience in higher education equine studies programs. She grew up in Massachusetts and received her BS in animal science from the University of Massachusetts at Amherst. She then earned her MS in equine nutrition from the University of Florida and PhD from Virginia Tech in equine nutrition and exercise physiology. She taught at Virginia Intermont College and currently teaches at Emory & Henry University in their Equine Studies Program. Her research focuses on protein and amino acid nutrition of exercising horses, and she also served on the National Academy of Science committee that published the 2007 Nutrient Requirements of Horses 6th edition. Kelly Vineyard, MS, PhD, is a senior nutritionist in equine technical solutions with Purina Animal Nutrition. She consults with veterinarians, professional riders, and horse owners across the United States and is directly involved with new product innovation, research, and technical support at Purina. Vineyard earned her BS in animal and dairy sciences from Auburn University and her MS and PhD in animal sciences from the University of Florida. Her doctorate research focused on the effects of omega-3 fatty acid supplementation on immune function in horses. Vineyard is a frequent lecturer on equine nutrition topics, with expertise in omega-3 fatty acids, immune function, and performance horse nutrition. She is an avid dressage rider and is proud to have earned her USDF bronze and silver medals on an off-track Thoroughbred.