Equine Metabolic Syndrome is a common endocrine disorder in horses characterized by insulin dysregulation and obesity that predisposes to potentially devastating laminitis.
EMS creates a welfare paradox: the horse's natural feeding drive and capacity to thrive on calorie-rich pasture, traits essential for survival in lean wild environments, become liabilities in managed settings with abundant food. Restricting a food-motivated animal from eating is genuinely difficult to manage humanely; strip grazing, muzzles, and hay-only diets cause frustration. Yet the alternative - allowing unrestricted grazing in EMS horses - risks severe laminitis, one of the most painful conditions equines experience. Owner compliance with dietary management is a major welfare bottleneck, particularly when horses show signs of distress from restriction or when owners feel cruelty in withholding food. Misidentification of cresty necks as merely cosmetic and failure to test hay sugar content are common management failures that lead to preventable laminitis episodes.