Horse Metabolic Syndrome: Diet and Welfare Management

How equine metabolic syndrome causes chronic suffering through laminitis and what dietary management can dramatically improve affected horses' lives.

Key Facts

Equine metabolic syndrome (EMS) affects an estimated 10-20% of ponies and horses in developed countries
EMS is associated with insulin dysregulation that dramatically increases laminitis risk
Grass, particularly in spring and autumn, contains high levels of non-structural carbohydrates that trigger episodes
Even brief grazing periods during high-risk times can trigger acute laminitis in insulin-dysregulated horses
Weight loss in overweight EMS horses significantly reduces laminitis frequency and severity

Welfare Considerations

Laminitis is one of the most painful conditions experienced by horses, and for horses with equine metabolic syndrome it is a recurring and often preventable threat. The chronic welfare burden on affected horses — from the pain of active laminitis episodes, from movement restriction during recovery, and from the dietary management required to prevent recurrence — is significant. Yet with appropriate management, many EMS horses live comfortable lives with dramatically reduced episode frequency. The challenge is that the management required — strip grazing or dry-lot turnout, soaked hay, weight monitoring, and often medical support — is time-consuming and requires consistent owner commitment.

What You Can Do

Have your horse or pony tested for insulin dysregulation and EMS if they are overweight or prone to laminitis
Restrict access to lush pasture, particularly in spring, autumn, and after frost or drought stress
Soak hay for 30-60 minutes to reduce non-structural carbohydrate content for affected horses
Work with your vet and an equine nutritionist to develop an individualised dietary plan
Monitor body condition score monthly and maintain a healthy weight through appropriate diet and exercise