Nuts & Seeds · Tree Nuts

Walnuts

Health
ScoreA+

Walnuts are nutrient-dense tree nuts exceptionally rich in plant-based omega-3 fatty acids (ALA) and polyphenols, making them a cornerstone food for cardiovascular and cognitive longevity.

Track Walnuts in Formulate — free

Log it, see it roll into your daily nutrient coverage, and build a scored stack.

Open app →

Why Walnuts scores 91

Nutrient density25

Protein quality11

Fiber content8

Healthy fats10

Bioactive compounds15

Glycemic impact10

Top nutrients

% Daily Value per 1 oz (28 g)

Copper 50%Manganese 41%Biotin 18%Magnesium 11%Vitamin B6 8.9%

Nutrition

per_100g

654

Calories

15.2g

Protein

13.7g

Carbs

65.2g

Fat

6.7g

Fiber

Health benefits

Improved cardiovascular health and reduced atherosclerosis risk

strong evidence

ALA omega-3s and polyphenols reduce LDL oxidation, improve endothelial function, and decrease arterial inflammation; copper supports collagen cross-linking in blood vessel walls

Enhanced cognitive function and reduced neurodegenerative disease risk

moderate evidence

ALA and polyphenols cross the blood-brain barrier; polyphenols reduce amyloid-beta accumulation and neuroinflammation; magnesium supports synaptic plasticity

Improved gut microbiome diversity and metabolic endotoxemia reduction

moderate evidence

Polyphenols undergo colonic fermentation, promoting beneficial taxa (Lactobacillus, Faecalibacterium); increased short-chain fatty acid production reduces lipopolysaccharide translocation

Reduced systemic inflammation and improved inflammatory markers

strong evidence

Polyphenolic metabolites activate intestinal barrier function; reduced bacterial lipopolysaccharide absorption decreases TNF-α and IL-6 signaling

Enhanced insulin sensitivity and metabolic health

moderate evidence

High fiber and magnesium content improve glucose regulation; polyphenols enhance insulin receptor sensitivity and mitochondrial function

Pairs well with

·Pair with blueberries because both are polyphenol-rich; anthocyanins from blueberries synergize with walnut polyphenols to enhance antioxidant and anti-inflammatory effects
·Pair with extra virgin olive oil because both contain polyphenols that work additively; oleocanthal from EVOO enhances the absorption of walnut polyphenols through similar metabolic pathways
·Pair with leafy greens (spinach, arugula) because phylloquinone (vitamin K1) from greens enhances bone mineralization while walnut minerals (magnesium, copper, phosphorus) support bone matrix formation
·Pair with pomegranate because punicalagins amplify the anti-inflammatory effects of walnut polyphenols through complementary molecular targets (NF-κB and MAPK pathways)

Practical tips

·Best timing: Walnuts have no circadian constraints; consuming them with main meals (breakfast, lunch, or dinner) enhances polyphenol absorption by increasing gastric transit time and bile acid secretion. Morning consumption may provide cognitive benefits throughout the day due to sustained ALA and polyphenol bioavailability.
·Store walnuts in airtight containers in the refrigerator or freezer (up to 12 months) to prevent oxidation of polyunsaturated fats; room temperature storage reduces polyphenol content within 4-8 weeks
·Consume 28-42g daily (1-1.5 ounces, approximately 7-10 whole walnuts) to achieve therapeutic doses of ALA (2.5-4g) while staying within caloric targets for weight management
·Soak walnuts in water for 30 minutes before consumption or light roasting at ≤160°C to reduce phytic acid content and enhance mineral bioavailability without degrading heat-sensitive polyphenols
·Choose raw or lightly roasted walnuts over heavily processed varieties; roasting above 180°C reduces polyphenol content by 10-15% compared to raw walnuts
·Add walnuts to morning meals to increase early-day satiety and stabilize blood glucose throughout the day, supporting circadian metabolic health