Changes in diet and supplement use in dogs with cancer

J Vet Intern Med. 2023 Sep-Oct;37(5):1830-1838. doi: 10.1111/jvim.16825. Epub 2023 Aug 9.

Abstract

Background: Many dog owners alter their dog's nutritional regimen after a diagnosis of cancer. There are limited data as to specific changes made and reasons behind these changes.

Hypothesis/objectives: To collect updated and detailed data on changes made by owners to their dog's diet and supplements after a cancer diagnosis.

Animals: Responses were collected from a survey of dog owners who brought their dogs to the UC Davis Veterinary Medical Teaching Hospital's Oncology Service for the first time after a cancer diagnosis. Dogs with recurrence or presenting for a second type of cancer were excluded.

Methods: Eligible owners were surveyed between December 2020 and March 2022. The survey contained 62 questions regarding diet, supplement use, and treats, and how these were altered after a cancer diagnosis. Responses were matched to medical record data.

Results: One hundred twenty-eight surveys were retained for analysis, including 120 respondents that completed the survey. In response to a cancer diagnosis, 54.8% (95% CI; 45.7%-63.8%) of owners altered diets or supplements or both. The most common informational resource for dog diets was veterinarians (53.9%). Usage of home-prepared foods significantly increased after a cancer diagnosis (P = .03). There was no significant difference in commercial diet usage before or after a diagnosis (P = .25). Joint support products were the most common supplements given both before (37.4%) and after (35.0%) diagnosis.

Conclusions and clinical importance: Many dog owners alter their dog's nutritional intake after a cancer diagnosis. These owners should be provided information relating to commonly observed alterations, including home-prepared foods and supplements.

Keywords: dog; home-prepared; informational resources; nutrition; oncology.

MeSH terms

  • Animals
  • Diet / veterinary
  • Dietary Supplements
  • Dog Diseases*
  • Dogs
  • Humans
  • Neoplasms* / veterinary
  • Surveys and Questionnaires
  • Veterinarians*