Reviews push pet food bioactives from buzzword toward evidence
A pair of recent review papers is helping sharpen the conversation around “functional” pet food ingredients, moving it beyond broad marketing language and toward clearer definitions, mechanisms, and evidence gaps. In Veterinary Research Communications, Guo, Farooq, and Liu review how functional ingredients, bioactive compounds, and dietary supplements are being used in companion animal nutrition, arguing for more consistent terminology borrowed from human nutrition and a better framework for evaluating clinical effects. A second review in Animals focuses specifically on plant-derived functional ingredients in dogs and cats, grouping compounds such as polyphenols, plant extracts, microalgae, cannabinoids, and omega-3 sources by phytochemical class and proposed physiologic effects, including antioxidant, anti-inflammatory, immunomodulatory, and microbiome-related activity. Together, the papers reflect a broader industry push to position pet food as a vehicle for targeted health support, while also underscoring that evidence quality still varies widely by ingredient and indication. (pmc.ncbi.nlm.nih.gov)
Why it matters: For veterinary professionals, the reviews are a useful reminder that “functional” doesn’t equal proven. In the U.S., pet food ingredients still must be safe and legally permitted for their intended use, and animal foods do not fall under the human dietary supplement framework. At the same time, AAFCO distinguishes between complete-and-balanced foods, treats, and products intended for intermittent or supplemental feeding, which matters when pet parents bring in foods or add-ons marketed around gut health, inflammation, cognition, or skin support. The practical takeaway is familiar but increasingly important: evaluate the whole diet, the intended use, the claim language, and the strength of evidence behind any featured ingredient before assuming clinical benefit. (fda.gov)
What to watch: Expect more product claims built around bioactives, but also more scrutiny of substantiation, labeling, and whether published evidence in dogs and cats keeps pace with formulation trends. (aafco.org)