Plant-based fat sources only
Score impact: −10 pts per affected product
Exclusively plant-derived oils as the fat source. Cats cannot efficiently convert ALA to EPA/DHA — animal fat or fish oil is necessary.
Score Rationale
Cats lack sufficient delta-6 desaturase activity to convert short-chain ALA (from plant oils) into long-chain EPA and DHA, which are required for neurological function and vision. A diet relying exclusively on plant-derived fats risks long-term essential fatty acid deficiency — particularly DHA, which is critical for retinal and brain development.
Scientific Evidence
- · Rivers JP et al. (1976). Inability of the cat to desaturate essential fatty acids. Nature 258(5531):171–173.
- · National Research Council (2006). Nutrient Requirements of Dogs and Cats. Washington DC: National Academies Press.
- · Bauer JE (2006). Metabolic basis for the essential nature of fatty acids and the unique dietary fatty acid requirements of cats. Journal of the American Veterinary Medical Association 229(11):1729–1732.
Affected Products (0 of 60)
None of the 60 reviewed products have been identified with this risk factor. It is included because it appears in commercial cat food and is worth checking when reading labels.