Treatment of equine metabolic syndrome: A clinical case series.
Authors: Morgan R A, Keen J A, McGowan C M
Journal: Equine veterinary journal
Summary
Morgan, Keen and McGowan's 2016 case series assessed whether owner-managed weight loss and exercise programmes could meaningfully improve insulin sensitivity in horses and ponies with equine metabolic syndrome (EMS), a key concern given the strong association between insulin dysregulation and laminitis risk. Nineteen animals (17 with prior laminitis episodes) received individually tailored dietary and exercise plans implemented over 3–6 months in their home environments, with clinical examination and dynamic endocrine testing conducted before and after the intervention period. All animals achieved significant reductions in body condition score and 18 of 19 lost weight (both P<0.001), whilst metabolic markers improved substantially: basal insulin decreased, insulin response at 45 minutes during a combined glucose–insulin tolerance test fell, glucose clearance accelerated, and the overall area under the glucose curve reduced (all P<0.05). These findings demonstrate that personalised, owner-compliant programmes can deliver genuine metabolic benefits in EMS cases managed within typical yard settings, suggesting that protocol adherence—rather than intervention complexity—may be the limiting factor in clinical outcomes for insulin-dysregulated horses.
Read the full abstract on PubMed
Practical Takeaways
- •Customized diet and exercise plans can effectively treat EMS in owner-managed settings without specialized facilities, though compliance requires careful owner guidance
- •Weight loss alone correlates with measurable improvements in insulin sensitivity markers, making this a practical first-line intervention for laminitis prevention
- •Regular monitoring of insulin dynamics through dynamic testing helps confirm treatment efficacy and may improve owner compliance by demonstrating objective improvement
Key Findings
- •All 19 animals showed significant reduction in body condition score (P<0.001) and 18/19 showed reduction in bodyweight (P<0.001) over 3-6 months
- •Significant reductions achieved in basal insulin and insulin at 45 min during combined glucose insulin tolerance test (P<0.05)
- •Blood glucose return to baseline and mean area under glucose curve both significantly improved (P<0.05)
- •Owner-implemented tailored diet and exercise programmes in normal environments resulted in weight loss accompanied by improved insulin sensitivity