Hazelnut

What other names is Hazelnut known by?

Aveleira, Avelinier, Avellana, Avellano, Cobnut, Corylus avellana, Corylus heterophylla, Coudrier, European Filbert, European Hazel, Haselnuss, Haselstrauch, Hazel, Hazel Nut, Noisetier, Noisetier Commun, Noisetier du Japon, Noisette, Noisettes.

What is Hazelnut?

Hazelnut is the nut from the hazel tree. People use it as medicine.

Hazelnut oil is used to lower cholesterol and as an antioxidant.

People commonly eat hazelnuts as food.

Insufficient Evidence to Rate Effectiveness for...

More evidence is needed to rate the effectiveness of hazelnut for these uses.

How does Hazelnut work?

Hazelnut contains oil, protein, and fiber. There isn't enough information to know how hazelnut might work for medicinal uses.

Are there safety concerns?

Hazelnut seems to be safe for most people in food amounts. But some people are allergic to hazelnuts and have had serious allergic reactions including life-threatening breathing problems (anaphylaxis). Hazelnuts have also been associated with one reported outbreak of botulism from contaminated yogurt.

Special Precautions & Warnings:

Pregnancy and breast-feeding: Hazelnut is safe in amounts found in food, but there's not enough information to know if it's safe in the larger amounts that are used as medicine.

Allergies: People who are allergic to peanuts, mugwort pollen, Brazil nut, birch pollen, and macadamia nut might also be allergic to hazelnut.

Dosing considerations for Hazelnut.

The appropriate dose of hazelnut depends on several factors such as the user's age, health, and several other conditions. At this time there is not enough scientific information to determine an appropriate range of doses for hazelnut. Keep in mind that natural products are not always necessarily safe and dosages can be important. Be sure to follow relevant directions on product labels and consult your pharmacist or physician or other healthcare professional before using.

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Natural Medicines Comprehensive Database rates effectiveness based on scientific evidence according to the following scale: Effective, Likely Effective, Possibly Effective, Possibly Ineffective, Likely Ineffective, and Insufficient Evidence to Rate (detailed description of each of the ratings).

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Reviewed on 9/17/2019
References

Asero R. Detection and clinical characterization of patients with oral allergy syndrome caused by stable allergens in Rosaceae and nuts. Ann Allergy Asthma Immunol 1999;83:377-83. View abstract.

Caballero T, Martin-Esteban M. Association between pollen hypersensitivity and edible vegetable allergy: a review. J Investig Allergol Clin Immunol 1998;8:6-16. View abstract.

Caballero T, Pascual C, Garcia-Ara MC, Ojeda JA, Martin-Esteban M. IgE crossreactivity between mugwort pollen (Artemisia vulgaris) and hazelnut (Abellana nux) in sera from patients with sensitivity to both extracts. Clin Exp Allergy 1997;27:1203-11. View abstract.

Lutz M, Bonilla S, Concha J, et al. Effect of dietary oils, cholesterol and antioxidant vitamin supplementation on liver microsomal fluidity and xenobiotic-metabolizing enzymes in rats. Ann Nutr Metab 1998;42:350-9. View abstract.

Munoz MF, Lopez-Cazana JM, Villas F, et al. Exercise-induced anaphylactic reaction to hazelnut. Allergy 1994;49:314-6. View abstract.

O'Mahony M, Mitchell E, Gilbert RJ, Hutchinson DN, et al. An outbreak of foodborne botulism associated with contaminated hazelnut yoghurt. (abstract) Epidemiol Infect 1990;104:389-95. View abstract.

Pumphrey RS, Wilson PB, Faragher EB, Edwards SR. Specific immunoglobulin E to peanut, hazelnut and brazil nut 731 patients: similar patterns found at all ages. Clin Exp Allergy 1999;29:1256-9. View abstract.

Savage GP, McNeil DL. Chemical composition of hazelnuts (Corylus avellana) grown in New Zealand. Int J Food Sci Nutr 1998;49:199-203. View abstract.

Sutherland MF, O'Hehir RE, Czarny D, Suphioglu C. Macadamia nut anaphylaxis: demonstration of specific IgE reactivity and partial cross-reactivity with hazelnut. J Allergy Clin Immunol 1999;104:889-90.