Walnuts
The nut with the highest content of plant-based omega-3 (ALA) and polyphenols. Part of the PREDIMED arm that lowered cardiovascular events — and one of the few snacks all three camps endorse.
Nutrition
Macros
Vitamins
Minerals
Dr. Gundry
Walnuts are among Gundry's explicitly recommended nuts — high in good fats, polyphenols, no problematic lectins. He regularly cites them as an ideal snack and fat source within his program.
Dr. William Li · 5×5 system
Li lists walnuts as a food acting across multiple systems — ALA and polyphenols support membrane regeneration and vascular health, the fiber feeds the microbiome. Studies point to favourable effects on gut-flora composition.
Biolazar evidence
Nuts in general show a dose-dependent mortality reduction in large cohorts (Bao et al., n≈119,000), and PREDIMED provides RCT evidence for the cardiovascular benefit. Walnuts are calorie-dense — a handful (about 30 g) is the studied serving size, not the whole bag.
How to use
A handful (about 30 g) daily as a snack or over salad/yogurt. Raw or lightly toasted. Store cool and dark — the abundant unsaturated fats oxidise otherwise (rancid taste = don't eat).
