Problem Solving Weight Loss in Older Horses
  by Robert N. Oglesby DVM

With the advent of ivermectin-based dewormers in the late seventies, horse owners could control the large strongyle. Migration of this extremely destructive strongyle's larvae up the mesenteric arteries and the ensuing damage was largely responsible for limiting the horse's life to around the 20-year mark. This limit on a horse's life meant we rarely had to deal with geriatric diseases of horses. Since the use of this dewormer, the incidence of life-threatening infarction of the blood supply to the bowel has steadily declined. Horses can now be expected to live well into their 30s or beyond, depending on many factors, including the level of health care. However, with the increase in older horses we are seeing more problems that result in weight loss despite continuing a good diet.

This article discusses diagnosis of common problems that cause weight loss and lists some of the most common problems, lists treatment options, and provides links to articles with detailed information.

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