Walnuts score 79/100, a 'Very Good' rating, largely due to their exceptional healthy fat profile, high omega-3 content, and rich micronutrient density.
Nutrition data (per 100 g)
Source: USDA FoodData Central.
Walnuts contains 654 kcal per 100 g.
Walnuts contains 15.2 g of protein per 100 g.
Walnuts contains 6.7 g of fiber per 100 g.
Walnuts contains 65.2 g of total fat per 100 g (6.1 g saturated).
Walnuts contains 0 g of added sugar per 100 g.
Walnuts provides 2 mg of sodium per 100 g.
Walnuts provides 441 mg of potassium per 100 g.
Walnuts provides 158 mg of magnesium per 100 g.
Walnuts scores 79/100 on FoodScore (very good).
Walnuts is classified as NOVA 1 (unprocessed or minimally processed).
Walnuts are a minimally processed whole food, classified as NOVA 1.
A 100g serving provides 9g of omega-3 fatty acids, a significant amount for heart health.
They are a good source of plant protein with 15.2g per 100g.
Walnuts contribute 6.7g of fiber per 100g, supporting digestive health.
They are low in sodium (2mg) and contain no added sugar.
Scores +7 points above the nut seed category average (72/100 across 29 foods).
Walnuts achieve a 'Very Good' FoodScore of 79/100, primarily driven by their strong nutritional profile. They receive significant bonuses for their healthy fat profile, particularly the high content of omega-3 fatty acids, with 9g per 100g. The presence of 6.7g of dietary fiber and 15.2g of plant-based protein per 100g also contributes positively to the score. Furthermore, walnuts are rich in several key micronutrients, including magnesium (38% DV), zinc (28% DV), and folate (25% DV), earning additional points. As a minimally processed whole food (NOVA 1), they receive a substantial bonus. The only notable penalty comes from their saturated fat content of 6.1g per 100g, which slightly reduces the overall score. To achieve an even higher score, the saturated fat content would need to be lower, but given their overall nutrient density, walnuts remain an excellent choice.
Health benefits
What the nutrients in walnuts actually do for you, grounded in established dietary science.
Supports Heart Health
Walnuts are particularly beneficial for cardiovascular health due to their unique fat composition. They are an excellent source of alpha-linolenic acid (ALA), a plant-based omega-3 fatty acid, providing 9g per 100g. Dietary guidelines emphasize the importance of omega-3s for maintaining healthy cholesterol levels and reducing the risk of heart disease. Additionally, walnuts offer a favorable balance of monounsaturated and polyunsaturated fats over saturated fats, which further supports a healthy heart. Including walnuts as part of a balanced diet can contribute to overall heart well-being.
Aids Blood Sugar Management
For individuals managing blood sugar levels, walnuts can be a valuable dietary component. Their high fiber content, at 6.7g per 100g, helps to slow down sugar absorption and prevent rapid spikes in blood glucose. As a minimally processed whole food with no added sugar, walnuts have a low glycemic impact. Research supports that regular consumption of nuts, including walnuts, can be associated with improved insulin sensitivity. Incorporating a small handful of walnuts can be a smart snack choice to help maintain stable blood sugar throughout the day.
Boosts Brain Function
Walnuts are often recognized for their potential to support cognitive function and brain health. This is largely attributed to their high concentration of omega-3 fatty acids, specifically ALA, which plays a crucial role in brain structure and function. They also contain antioxidants and polyphenols that may help reduce oxidative stress and inflammation in the brain. The NIH lists omega-3s as essential for brain development and maintenance. Regular intake of walnuts may contribute to better memory and overall brain health as part of a balanced diet.
Contributes to Bone Health
Walnuts provide several key minerals important for maintaining strong bones. They contain 158mg of magnesium (38% DV) and 98mg of calcium (8% DV) per 100g, both essential for bone density and structure. Magnesium is particularly vital as it helps regulate calcium and vitamin D levels, which are critical for bone metabolism. While not a primary source of calcium, the combination of these minerals in walnuts contributes to a comprehensive approach to bone health. Including walnuts can complement other calcium-rich foods in a diet aimed at supporting skeletal integrity.
Supports Gut Health
The dietary fiber in walnuts is beneficial for promoting a healthy digestive system and supporting the gut microbiome. With 6.7g of fiber per 100g, walnuts contribute to regular bowel movements and can help prevent constipation. Fiber also acts as a prebiotic, feeding beneficial gut bacteria, which is crucial for a balanced and diverse gut microbiome. A healthy gut is linked to numerous aspects of overall health, including immune function and nutrient absorption. Regular consumption of fiber-rich foods like walnuts can foster a thriving internal environment.
Walnuts score 79/100, a 'Very Good' rating, largely due to their exceptional healthy fat profile, high omega-3 content, and rich micronutrient density.
How to eat it
Walnuts are a versatile and nutritious addition to the American diet, commonly enjoyed as a snack or incorporated into various dishes. Their rich, earthy flavor and satisfying crunch make them popular in both sweet and savory applications. A typical serving size is about one ounce, which is roughly a small handful, providing a good balance of healthy fats, protein, and fiber.
Store walnuts in an airtight container in the refrigerator or freezer to prevent rancidity and preserve their fresh taste and nutritional value.
Add chopped walnuts to oatmeal, yogurt, or salads for added texture and nutrients, enhancing satiety and flavor.
Incorporate walnuts into baked goods like muffins or bread, or use them as a crust for fish or chicken to boost omega-3 intake.
Combine walnuts with dried fruit for a quick and energizing snack, but be mindful of portion sizes due to their calorie density.
Things to keep in mind
The most significant caution regarding walnuts is the potential for nut allergies. Walnut allergies are common and can range from mild symptoms like hives and swelling to severe, life-threatening anaphylaxis. Individuals with known tree nut allergies should strictly avoid walnuts. For those without allergies, consuming very large quantities might lead to mild digestive upset due to their high fiber content, but this is uncommon at typical serving sizes. There are no widely documented interactions with medications or specific concerns for particular populations at normal consumption levels.
Yes, walnuts are considered very healthy, scoring 79/100 on FoodScore. They are rich in omega-3 fatty acids, fiber, protein, and essential minerals like magnesium and zinc. As a minimally processed whole food, they offer a wide array of benefits for heart, brain, and gut health.
Are walnuts good for weight loss?
Walnuts can be part of a weight management diet due to their fiber (6.7g/100g) and protein (15.2g/100g) content, which contribute to satiety. While calorie-dense (654 calories/100g), consuming them in controlled portions can help you feel full and reduce overall calorie intake from less nutritious foods. Their healthy fats also support metabolic health.
Are walnuts processed?
No, walnuts are classified as NOVA 1, meaning they are unprocessed or minimally processed. This indicates they are consumed in their natural state or with minimal alterations like shelling, without added sugars, unhealthy fats, or artificial ingredients.
How should I store walnuts?
To maintain freshness and prevent the healthy fats from becoming rancid, store walnuts in an airtight container in the refrigerator for up to six months or in the freezer for up to a year. Room temperature storage can significantly shorten their shelf life.
What can I use as an alternative to walnuts?
If you need an alternative due to allergy or preference, pecans or almonds can often be substituted, especially in baking or as a snack. While they offer different nutrient profiles, they provide similar textures and healthy fats. For a nut-free option, roasted pumpkin seeds can be a good choice.
Are walnuts good for heart health?
Walnuts are excellent for heart health. They contain 9g of omega-3 fatty acids (ALA) per 100g, which are known to support healthy cholesterol levels and reduce inflammation. Their favorable fat profile, with low saturated fat and no trans fat, further contributes to cardiovascular well-being.
Do walnuts help with brain function?
Yes, walnuts are often associated with improved brain function. Their high omega-3 content is crucial for brain cell membranes and cognitive processes. Additionally, the antioxidants present in walnuts may help protect brain cells from damage, supporting memory and overall cognitive health.