Health Guide

European hazel

Meet the European Hazel (*Corylus avellana*), the powerhouse tree behind one of the world's most beloved nuts. While you likely know them as delicious hazelnuts (or filberts), these nuts are a nutritional treasure trove. Packed with heart-healthy monounsaturated fats, powerful antioxidants like Vitamin E, and essential minerals, they are far more than just a snack. Think of them as nature's multitasker: supporting your heart, guarding your cells against stress, and providing sustained energy. Whether eaten raw, roasted, or as a cold-pressed oil, the European Hazel is a delicious, natural way to boost your overall health.
Evidence BasedDietary Supplement
European hazel
VERIFIED SOURCE

Bio-Activity Analysis

Vitamin E Bioavailability: Food vs. Supplement

SCIENTIFIC DATA VISUALIZATION

Y-Axis
Absorption Efficiency
Source

Health Benefits & Sources

Why You Need It

  • Heart Health: Rich in oleic acid (a healthy fat) and magnesium, which help lower bad cholesterol (LDL) and maintain healthy blood pressure.
  • Antioxidant Powerhouse: Loaded with Vitamin E and manganese, these nuts fight oxidative stress, protecting your cells from aging and chronic disease.
  • Blood Sugar Balance: The combination of healthy fats, fiber, and protein slows down sugar absorption, preventing energy crashes.
  • Brain Function: Healthy fats and Vitamin E are crucial for maintaining cognitive health and may help prevent cognitive decline.

Deep Dive

The European Hazel is primarily valued for its lipid profile. Unlike saturated fats found in many processed foods, the fats in hazelnuts are predominantly monounsaturated, similar to those found in olive oil. This specific profile is clinically proven to improve endothelial function (the lining of your blood vessels). Furthermore, the skin of the hazel contains potent phenolic compounds. When you eat the whole nut, you get an anti-inflammatory effect that benefits your entire cardiovascular system.

Natural Food Sources

The best way to consume European Hazel is whole and raw (or dry roasted without added oils/salts). The oil is also a fantastic, nutrient-dense cooking medium.

Food SourceAmount (per 100g)% Daily Value (DV)
Hazelnuts (Raw)15g Protein30%
Hazelnuts (Raw)60g Fat92%
Hazelnuts (Raw)11mg Vitamin E73%
Hazelnut Oil47mg Vitamin E313%

Supplementation

While usually consumed as food, Hazelnut Oil is available in softgel capsules as a dietary supplement.

  • Usage: Typically 1000mg daily.
  • Who should take it: Those looking to supplement Vitamin E and healthy fats who may not enjoy eating the nuts directly.
  • Food First: Eating the whole nut provides fiber and minerals that isolated oil or supplements do not.

Top Food Sources

Raw Hazelnuts
Best source for fiber and minerals
Hazelnut Oil
Concentrated source of Vitamin E
Hazelnut Butter
Watch for added sugars/oils in commercial brands
Filberts (Corylus avellana)
Same species, slightly different variety
Hazelnut Flour
Great low-carb baking alternative

Frequently Asked Questions

Yes, in moderation. Despite being high in calories, the fiber, protein, and healthy fats increase satiety (feeling full), helping you eat less overall.
It depends on the type. Unrefined cold-pressed oil has a low smoke point and is best for dressings. Refined hazelnut oil has a higher smoke point and is safe for sautéing.
Light roasting is generally fine and may even make some antioxidants easier to absorb. However, deep frying or burning the nuts can damage the healthy fats.
Yes! It is rich in Vitamin E and fatty acids, making it an excellent natural moisturizer for dry or irritated skin.

Safety & Side Effects

Safety & Considerations

WARNING: ALLERGIES. Hazelnuts are tree nuts and are a common and potentially severe allergen. Individuals with a history of nut allergies must avoid hazelnuts entirely.

General Safety:

  • Kidney Stones: Hazelnuts contain oxalates. If you have a history of calcium-oxalate kidney stones, moderate your intake.
  • Weight Management: They are calorie-dense (approx. 620 calories per 100g). While healthy, portion control is key (aim for a small handful, about 1oz/28g).
  • Chemical Safety: Pure hazelnut oil is generally safe for culinary use. Topical use should be patch-tested for skin sensitivity.

Scientific References

  • [1]Sabaté, J., et al. (2010). 'Effects of nuts on cardiovascular risk factors.' *Current Atherosclerosis Reports*.
  • [2]Alasalvar, C., & Bolling, B. W. (2015). 'Review of nut phytochemistry, potential health benefits, and food applications.' *Food Research International*.
  • [3]Mercanlıgil, S. M., et al. (2007). 'Effects of hazelnut oil consumption on plasma lipids and antioxidant status.' *European Journal of Clinical Nutrition*.