Reviews push pet food functional ingredients toward clearer science

A new pair of review papers is helping sharpen the conversation around “functional” pet nutrition, moving it beyond marketing language and toward clearer scientific categories. In Veterinary Research Communications, Guo, Farooq, and Liu outline definitions for functional ingredients, bioactive compounds, and dietary supplements in companion animals, and summarize how these ingredients may affect immunity, oxidative stress, gut health, metabolism, and disease risk. A second review in Animals focuses on plant-derived functional ingredients in dogs and cats, highlighting polyphenols, plant extracts, microalgae, omega-3 sources, and cannabinoids as leading categories, while also underscoring variability in dose, formulation, and evidence quality. (mdpi.com)

Why it matters: For veterinary professionals, the takeaway isn’t that functional ingredients are ready to redefine commercial pet food overnight. It’s that the evidence base is expanding, but still uneven. Reviews cited in this literature point to potential benefits in antioxidant activity, inflammation control, microbiome modulation, skin and cardiovascular support, and immune function, yet they also repeatedly note that in vivo evidence, standardization, long-term safety data, and clinically meaningful endpoints remain limited. That puts veterinarians in a key position: helping pet parents separate plausible adjunctive nutrition strategies from broad label claims, while keeping the focus on complete-and-balanced diets and evidence-based formulation. (mdpi.com)

What to watch: Expect more pressure on pet food makers to back functional-ingredient claims with species-specific data, especially as research expands into plant extracts, algae, alternative proteins, and other bioactive additives. (mdpi.com)