Hazelnut | whatsinit

About

What it is and where it shows up.

Hazelnuts (Corylus avellana L.) are edible tree nuts exceptionally rich in monounsaturated fatty acids (especially oleic acid), vitamin E, fibre, phytosterols, and antioxidant polyphenols; they are consumed whole, roasted, as flour, as oil, or processed into confectionery and spreads. Their nutrient profile supports cardiovascular health and they are a traditional staple of the Mediterranean diet.

Safety summary

The regulatory and scientific consensus.

Hazelnuts are nutritionally beneficial for most people, with evidence from systematic reviews supporting improvements in cardiometabolic risk factors—particularly LDL-cholesterol reduction—without adverse effects on body weight or composition. However, hazelnut is a globally recognised major food allergen capable of triggering reactions ranging from mild urticaria to life-threatening anaphylaxis; the eliciting dose in the most sensitive 1% of allergic individuals is as low as 0.1 mg hazelnut protein. No acceptable daily intake (ADI) is established, as hazelnuts are a whole food ingredient rather than a food additive.

Regulatory landscape

What food-safety regulators have decided.

Jurisdiction	Status	Note
FSANZ (Food Standards Australia New Zealand) (Australia)	Approved	Australia New Zealand Food Standards Code (Standard 1.2.3) mandates labeling of hazelnut as an allergen. The VITAL 2.0 program identifies 0.1 mg hazelnut protein as the eliciting reference dose for the most sensitive 1% of the allergic population.source
Health Canada (Canada)	Approved	Health Canada and CFIA designate hazelnuts as a priority allergenic food; mandatory labeling required on all prepackaged foods. More than 3 million Canadians are reported to have at least one food allergy.source
EFSA (European Food Safety Authority) (European Union)	Approved	Hazelnuts are explicitly named in Annex II of Regulation (EU) No 1169/2011 as one of 14 mandatory food allergens; must be declared by specific name on all food labels, including foods sold loose or in catering. Approved for general consumption with no upper use limit.source
FSSAI (Food Safety and Standards Authority of India) (India)	Approved	FSSAI's Food Safety and Standards (Labeling and Display) Amendment Regulations (2022) introduce allergen labeling requirements aligned with Codex Alimentarius; tree nuts including hazelnuts are subject to mandatory declaration.source

Who should approach with care

Whose guidance would steer them away.

Nut Allergy — Hazelnuts are a globally recognised major food allergen; reactions range from mild urticaria to life-threatening anaphylaxis, with an eliciting dose as low as 0.1 mg hazelnut protein identified by VITAL 2.0 for the most sensitive 1% of allergic individuals.

Infants — Introduction of tree nuts including hazelnuts in infants should follow age-appropriate guidelines and medical advice, particularly where there is a personal or family history of atopic disease, to mitigate risk of sensitisation.

Children — Whole hazelnuts pose a choking hazard for young children; hazelnut allergy can first manifest in childhood, and products containing hazelnuts should be introduced gradually and with appropriate supervision.

Research citations

The sources behind this verdict.

1other. Global Perspectives on Allergen Labeling: Harmonization of Regulations and Practices. pmc.ncbi.nlm.nih.gov
2PubMed. Phytoextracts for Human Health from Raw and Roasted Hazelnuts and from Hazelnut Skin and Oil: A Narrative Review, 2023. pmc.ncbi.nlm.nih.gov
3PubMed. Effects of Hazelnut Consumption on Cardiometabolic Risk Factors and Acceptance: A Systematic Review, 2022. pubmed.ncbi.nlm.nih.gov
4PubMed. A Hazelnut-Enriched Diet Modulates Oxidative Stress and Inflammation Gene Expression without Weight Gain, 2019. pubmed.ncbi.nlm.nih.gov
5PubMed. Effects of Hazelnut Consumption on Blood Lipids and Body Weight: A Systematic Review and Bayesian Meta-Analysis, 2016. pubmed.ncbi.nlm.nih.gov
6FDA. Food Allergen Labeling and Consumer Protection Act of 2004 (FALCPA), 2004. fda.gov

Independently researched6 citations