Beyond the Bowl: Part 6 — The Raw Difference: Nutrients That Support a Trainable Brain

We are back with Part 6 of our series with behavioral neuroscientist Dr. Pepe Hernandez. Last week, we looked at where highly processed diets can fall short. This week, we flip to the solution side: the specific whole-food nutrients in a complete raw diet that help build a brain ready to learn.

The Raw Difference: Nutrients That Support a Trainable Brain

By Dr. Pepe Hernandez, PhD, CPDT-KA

This is where the conversation moves from problem to solution. A complete, carefully formulated raw diet may offer something many heavily processed diets struggle to preserve: a nutrient-dense, whole-food matrix rich in high-quality protein, essential fatty acids, vitamins, minerals, moisture, and food-based cofactors that support normal nervous-system function.

That does not mean raw food trains the dog. It does not. It means that a dog's brain has to be biologically prepared to benefit from training. A dog who is nutritionally under-supported, digestively uncomfortable, or metabolically strained may have a harder time focusing, recovering from arousal, retaining new information, or showing up consistently from one session to the next.

"A complete raw diet is not magic. It is infrastructure."

— Dr. Pepe Hernandez, PhD, CPDT-KA

Omega-3 Fatty Acids: Cell Membranes, Development, and Learning

Omega-3 fatty acids, especially DHA, are incorporated into neuronal cell membranes and help support the cell signaling systems involved in brain development and learning. In puppy studies, diets fortified with DHA-rich fish oil have been associated with improved performance on several learning-related tasks, including reversal learning, visual discrimination, and early maze performance. [1] Wild-caught salmon provides naturally occurring DHA and EPA in a whole-food form, making it a valuable brain-supportive ingredient in a complete diet.

Grass-Fed Beef and Organ Meats: Amino Acids and B-Vitamin Cofactors

Grass-fed beef and organ meats — including liver, kidney, heart, and spleen — provide high-quality animal protein, tryptophan, and B-complex vitamins such as B6, B12, and riboflavin, all of which help support normal nervous-system metabolism. [2,3] Tryptophan is the dietary precursor for serotonin, while B vitamins act as cofactors in enzymatic pathways that help convert nutrients into chemical messengers involved in regulation, attention, and learning. [4]

Whole Eggs: Choline, Attention, and Memory

Whole eggs, especially the yolk, provide a rich whole-food source of choline — an essential nutrient involved in cell-membrane function, neurological development, and the synthesis of acetylcholine. [5,6] Acetylcholine is one of the key neurotransmitters involved in attention, learning, and memory encoding, [7] which makes choline part of the nutritional foundation that supports a dog's ability to retain and build on what they learn in training.

Wild Blueberries: Antioxidants and Cognitive Resilience

Wild blueberries are rich in anthocyanins, plant-based antioxidants studied for their anti-inflammatory and antioxidant effects in pathways relevant to brain aging. [8] In dogs, antioxidant-enriched diets have been shown to improve performance on certain learning tasks in aged Beagles, especially tasks affected by age-related cognitive decline. [9,10] In a complete diet, wild blueberries are best understood not as a training shortcut, but as a concentrated source of polyphenols that may help support long-term cognitive resilience.

Turmeric and Curcumin: Inflammation and Motivation Pathways

Curcumin, the primary active compound in turmeric, has been studied for antioxidant and anti-inflammatory effects, including pathways relevant to neuroinflammation. [11,12] Chronic inflammation can interfere with dopamine-related reward and motivation circuits, making effortful learning harder. [13] In training terms, a dog who is physically comfortable, less inflamed, and better regulated is more available for attention, reinforcement, and learning.

(We covered magnesium's role in stress regulation back in Part 4 — still very much part of this whole-food picture.)

Next Week: Part 7 — the gut-brain connection, and the story of the dog who started it all.

References

1. Zicker, S.C., Jewell, D.E., Yamka, R.M., & Milgram, N.W. (2012). Evaluation of cognitive learning, memory, psychomotor, immunologic, and retinal functions in healthy puppies fed foods fortified with DHA-rich fish oil. Journal of the American Veterinary Medical Association, 241(5), 583–594. DOI
2. National Research Council. (2006). Nutrient requirements of dogs and cats. National Academies Press. Link
3. Fuerniss, H.F., et al. (2024). Nutrient analysis of raw United States beef offal items. Animals, 14(15), 2198. DOI
4. Kautz, A., et al. (2024). Dietary intake of nutrients involved in serotonin and melatonin synthesis and metabolism. Nutrients, 16(9), 1255. DOI
5. DiBella, M., et al. (2020). Choline intake as supplement or as a component of eggs increases plasma choline and reduces interleukin-6 without modifying plasma cholesterol in participants with metabolic syndrome. Nutrients, 12(10), 3120. DOI
6. Derbyshire, E., & Obeid, R. (2020). Choline, neurological development and brain function: A systematic review focusing on the first 1000 days. Nutrients, 12(6), 1731. DOI
7. Hasselmo, M.E. (2006). The role of acetylcholine in learning and memory. Current Opinion in Neurobiology, 16(6), 710–715. DOI
8. Kalt, W., Cassidy, A., Howard, L.R., Krikorian, R., Stull, A.J., Tremblay, F., & Zamora-Ros, R. (2020). Recent research on the health benefits of blueberries and their anthocyanins. Advances in Nutrition, 11(2), 224–236. DOI
9. Cotman, C.W., Head, E., Muggenburg, B.A., Zicker, S., & Milgram, N.W. (2002). Brain aging in the canine: A diet enriched in antioxidants reduces cognitive dysfunction. Neurobiology of Aging, 23(5), 809–818. DOI
10. Siwak, C.T., Tapp, P.D., Zicker, S.C., et al. (2005). Chronic antioxidant and mitochondrial cofactor administration improves discrimination learning in aged but not young dogs. Progress in Neuro-Psychopharmacology and Biological Psychiatry, 29(3), 461–469. DOI
11. Kępińska-Pacelik, J., & Biel, W. (2023). Turmeric and curcumin — Health-promoting properties in dogs. Animals, 13(17), 2772. DOI
12. Zhou, B., Lin, T., Li, J., & Wu, F. (2025). Anti-inflammatory effect of curcumin on neurological disorders. Frontiers in Pharmacology. Link
13. Felger, J.C., & Treadway, M.T. (2017). Inflammation effects on motivation and motor activity: Role of dopamine. Neuropsychopharmacology, 42(1), 216–241. DOI