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How Many Hazelnuts Per Oz? A Guide to Serving Size and Nutrition

3 min read

According to the USDA, a standard one-ounce serving of shelled hazelnuts contains approximately 20 to 21 kernels. Understanding how many hazelnuts per oz can help you master portion control and enjoy this nutritious snack as part of a balanced diet.

Quick Summary

An ounce of hazelnuts contains roughly 20-21 kernels, which provides a wealth of healthy fats, protein, and fiber. The nuts are also packed with vitamins and minerals that support heart health and provide antioxidant benefits.

Key Points

  • Serving Size: One ounce of hazelnuts equals about 20-21 whole, shelled kernels, providing an easy way to control portions.

  • Nutrient-Dense: A one-ounce serving offers 178 calories, 17g of fat, and 4g of protein, along with key vitamins and minerals.

  • Heart Health: The high content of monounsaturated fats in hazelnuts helps lower bad cholesterol and support cardiovascular health.

  • Rich in Antioxidants: Hazelnuts, especially with their skin on, contain high levels of phenolic compounds and vitamin E, which combat oxidative stress.

  • Weight Management: The combination of fiber, protein, and healthy fats helps increase satiety, aiding in weight control.

  • High in Manganese: A single ounce provides a significant percentage of the daily recommended intake for manganese, important for bone health.

  • Versatile Ingredient: Hazelnuts can be enjoyed raw, roasted, or as an ingredient in various recipes, from baked goods to spreads.

In This Article

How to Measure Your Hazelnut Serving

Understanding the correct serving size is crucial for managing your calorie intake, especially with calorie-dense foods like nuts. A one-ounce serving of hazelnuts is the recommended portion for a nutritious snack. While the number of kernels can vary slightly based on the size of the individual nut, aiming for around 20 to 21 whole, shelled hazelnuts provides a consistent and accurate measure. This simple visual cue makes it easy to portion your snack without needing a kitchen scale every time.

Nutritional Breakdown of a One-Ounce Serving

Beyond just the count, a single ounce of hazelnuts packs a significant nutritional punch. This serving offers a range of vitamins, minerals, and macronutrients essential for overall health. For example, the same 20-21 kernel serving provides approximately 178 calories, with the majority coming from healthy monounsaturated and polyunsaturated fats. It also offers a decent amount of plant-based protein and dietary fiber.

Nutrients in one ounce (28g) of hazelnuts:

  • Calories: ~178 kcal
  • Total Fat: ~17g, primarily healthy unsaturated fats
  • Protein: ~4g
  • Carbohydrates: ~5g
  • Dietary Fiber: ~3g
  • Vitamin E: High concentration, acting as a powerful antioxidant
  • Manganese: Excellent source, crucial for bone development and metabolism

Comparing Hazelnuts to Other Common Nuts

To put the nutritional value of hazelnuts into perspective, a comparison with other popular tree nuts can be helpful. While all tree nuts are generally healthy, their micronutrient profiles can differ.

Nutrient (per 1 oz) Hazelnuts (approx. 21 kernels) Almonds (approx. 23 kernels) Walnuts (approx. 14 halves)
Calories 178 kcal 160 kcal 185 kcal
Protein 4.2g 6g 4g
Fat 17.2g 14g 18.5g
Fiber 2.8g 3.5g 2g
Manganese 87% RDI 42% RDI 42% RDI
Vitamin E 21% RDI 40% RDI N/A

As the table illustrates, hazelnuts stand out for their rich content of heart-healthy fats and exceptional levels of manganese and Vitamin E. Almonds offer slightly more protein and fiber, while walnuts are another excellent source of omega-3 fatty acids. Choosing between these nuts often comes down to individual nutritional goals and taste preferences.

Health Benefits of Regular Hazelnut Consumption

Incorporating hazelnuts into your diet can lead to several health improvements, largely due to their unique composition of healthy fats, fiber, antioxidants, and vitamins.

  • Support Heart Health: Hazelnuts are rich in monounsaturated fats and antioxidants that can help lower LDL (bad) cholesterol and improve overall cardiovascular markers.
  • Provide Antioxidant Protection: The high concentration of phenolic compounds, especially in the skin, protects cells from oxidative stress and can help reduce inflammation.
  • Manage Weight: The combination of healthy fats, protein, and fiber in hazelnuts helps increase satiety, keeping you feeling full for longer and potentially aiding in weight management.
  • Regulate Blood Sugar: The oleic acid found in hazelnuts may help improve insulin sensitivity and manage blood sugar levels, especially when included as part of a balanced diet.
  • Boost Brain Function: Hazelnuts are a good source of Vitamin B6, folate, and healthy fats, which support cognitive function, healthy blood flow to the brain, and neural connections.

Practical Ways to Enjoy Hazelnuts

Beyond simply snacking on them, hazelnuts are a versatile ingredient that can be added to many dishes. Eating them whole and raw with their skins on provides the highest antioxidant benefits, but they can be enjoyed in many forms.

Here are some ideas:

  • Toppings: Sprinkle chopped hazelnuts over oatmeal, yogurt, or salads for added crunch and flavor.
  • Baking: Use ground hazelnuts as a flour substitute in baking or add them whole to cookies and cakes.
  • Spreads: Blend roasted hazelnuts to create a rich, homemade hazelnut butter or paste for toast and sandwiches.
  • Roasting: Toasting hazelnuts in the oven for a few minutes can enhance their rich, nutty flavor, making them an even more satisfying snack.

For a deeper dive into the health benefits of nuts, visit the Healthline article on the top 9 nuts to eat for better health.

Conclusion

For those wondering how many hazelnuts per oz, the answer is approximately 20-21 kernels. This small serving size offers a wealth of benefits, from heart-healthy fats to powerful antioxidants and essential minerals. Whether you're looking to manage your weight, support brain function, or simply enjoy a delicious snack, incorporating this specific portion of hazelnuts into your diet is a simple and effective strategy. Just remember to eat them in moderation and listen to your body's needs for optimal results.

Frequently Asked Questions

A standard serving size for hazelnuts is one ounce (28g), which is approximately 20 to 21 whole, shelled kernels.

There are approximately 178 calories in a one-ounce (28g) serving of hazelnuts.

Yes, hazelnuts are packed with healthy fats, antioxidants, vitamins, and minerals that can support heart health, aid in weight management, and provide antioxidant protection.

Raw, unroasted hazelnuts with the skin on offer the highest concentration of antioxidants, which can be diminished during the roasting process.

While both are very healthy, almonds offer slightly more protein and fiber, while hazelnuts contain more healthy fats and higher levels of certain vitamins like Vitamin E and folate.

Yes, due to their high fiber, protein, and healthy fat content, hazelnuts can promote a feeling of fullness that helps curb appetite and aids in weight control.

For optimal freshness, hazelnuts should be stored in a cool, dry place inside an airtight container. Keeping them in the refrigerator or freezer can significantly extend their shelf life.

References

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Medical Disclaimer

This content is for informational purposes only and should not replace professional medical advice.