Comparative aspects of human, canine, and feline obesity and factors predicting progression to diabetes

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Obesity and diabetes mellitus are common diseases in humans, dogs and cats and their prevalence is increasing. Obesity has been clearly identified as a risk factor for type 2 diabetes in humans and cats but recent data are missing in dogs, although there is evidence that the unprecedented rise in canine obesity in the last decade has led to a rise in canine diabetes of similar magnitude. The insulin resistance of obesity has often been portrayed as major culprit in the loss of glucose control; however, insulin resistance alone is not a good indicator of progression to diabetes in people or pets. A loss of beta cell function is necessary to provide the link to impaired fasting and post-prandial plasma glucose. Increased endogenous glucose output by the liver is also a prerequisite for the increase in fasting blood glucose when non-diabetic obese humans and pets develop diabetes. This may be due to decreased hepatic insulin sensitivity, decreased insulin concentrations, or a combination of both. While inflammation is a major link between obesity and diabetes in humans, there is little evidence that a similar phenomenon exists in cats. In dogs, more studies are needed to examine this important issue.

Original languageEnglish (US)
Pages (from-to)121-135
Number of pages15
JournalVeterinary Sciences
Issue number2
StatePublished - Sep 1 2014


  • Adiponectin
  • Beta cells
  • Cytokines
  • Diabetes
  • Fructosamine
  • Gluconeogenesis
  • Glycolysis
  • Insulin
  • Leptin
  • Obesity

ASJC Scopus subject areas

  • veterinary(all)


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