These beauties are not from California. I cracked them open during a visit to Tennessee years ago. No need to label them “organic”, “non-GMO”, “AHA-certified” and so on…
But anywhere you get it — anyhow you have it — the walnut will do your brain a lot of good. It’s got fiber, protein and the omegas. All of these factors improve cognition, motor skills and emotional well-being.
The essential fatty acid is ALA/Omega-3. Note that ALA must convert to EPA and/or DHA to be beneficial. If there is doubt, stick with cold-water fish.