Weight loss is linearly associated with a reduction of the insulin response to an oral glucose test in Icelandic horses.
Authors: Delarocque Julien, Frers Florian, Huber Korinna, Feige Karsten, Warnken Tobias
Journal: BMC veterinary research
Summary
# Editorial Summary Insulin dysregulation remains a significant concern in equine practice, capable of triggering laminitis through sustained or episodic hyperinsulaemia, yet limited data exist quantifying the relationship between bodyweight reduction and measurable improvements in insulin response. Researchers retrospectively analysed oral glucose test (OGT) results from 19 Icelandic horses, tracking how changes in bodyweight correlated with alterations in their insulin dysregulation status over successive testing intervals. The findings revealed a linear relationship between weight loss and reduced insulin response to the OGT—a finding with important implications, as it suggests that even modest bodyweight reductions in predisposed horses can meaningfully improve their metabolic profile. For practitioners, this reinforces the evidence base for recommending weight management as a primary preventative strategy against laminitis in insulin-dysregulated horses, providing clients with quantifiable metabolic benefits beyond general health improvements. The linear nature of this relationship indicates that incremental weight loss consistently produces measurable insulin improvements, potentially offering a motivational benchmark when counselling owners on dietary and exercise interventions.
Read the full abstract on PubMed
Practical Takeaways
- •Weight loss programs directly improve insulin regulation—track body weight changes alongside monitoring laminitis risk in susceptible horses
- •Oral glucose testing can objectively measure whether your weight loss intervention is actually reducing insulin dysregulation, not just pounds
- •For high-risk breeds like Icelanders, even modest weight reduction yields measurable metabolic improvements
Key Findings
- •Weight loss was linearly associated with reduction in insulin response to oral glucose test
- •Each unit of weight loss correlated with measurable improvement in insulin dysregulation markers
- •Icelandic horses demonstrated consistent insulin response patterns across repeated OGTs
- •Dietary and activity-based weight management effectively reduced hyperinsulinemia risk