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Do you know the health benefits of hazelnuts?
By newseditors // 2025-10-08
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With hazelnuts as part of your daily diet, optimal health isn't such a hard nut to crack. Here are five science-backed benefits of this popular snack and versatile food ingredient (Article republished from GreenMedInfo.com) Nuts are a nutrient-dense food that contain healthy fats, protein, fiber, minerals and phenolic compounds. They are thought to offer wide-ranging cardiovascular and metabolic benefits and can be readily integrated into a balanced diet.[i] The hazelnut, which comes from the Corylus tree of the Betulaceae family, offers a sweet flavor and the flexibility of being eaten raw, roasted or as a paste in ground form. It's considered an excellent anti-inflammatory and hypolipidemic treat, being the second richest source of monounsaturated fatty acids (MUFAs) among nuts and being chock full of vitamin E, magnesium, copper, selenium, L-arginine, folate, fiber and polyphenols, to name a few.[ii] Here are five evidence-based benefits of hazelnuts. 1. Antioxidant Protection

Hazelnuts have one of the highest oxygen radical absorbance capacity (ORAC) scores of any nut, signifying outstanding levels of antioxidants.[iii] These chemicals protect the body from oxidative stress, which can damage cells, accelerate aging and promote disease.[iv],[v]

As testament to their antioxidant prowess, a hazelnut-enriched diet modulates oxidative stress and inflammatory gene expression without causing weight gain.[vi] Compounds of the tiny, mighty nut have been found to have antioxidant and antimicrobial effects.[vii]

Hazelnuts also contain the antioxidant vitamin E, which some studies indicate may help shield the body from cell damage linked to cancer.[viii]

2. Antiobesity Strategy

Proteins derived from hazelnuts are an excellent source of bioactive peptides. A 2019 study purified and identified antiobesity peptides from the nut, finding that the novel synthetic pentapeptide had potential antiobesity effects and may help combat metabolic conditions.[ix]

In a European study involving over 370,000 men and women ranging from 25 to 70 years old, higher intake of nuts was associated with reduced weight gain along with a lower risk of becoming obese or overweight.[x]

3. Improved Cardiovascular Health

The MUFAs and antioxidants in hazelnuts have been tied to a reduced risk of cardiovascular disease.[xi] In an intervention diet lasting up to 84 days with a dosage of hazelnuts ranging from 29 to 69 grams a day, it emerged that a hazelnut-enriched diet can decrease LDL cholesterol and total cholesterol, without substantially changing HDL cholesterol, triglycerides and body mass index (BMI).[xii]

According to separate research, a high-fat, high-MUFA hazelnut diet proved superior to a low-fat diet in terms of creating favorable changes in lipid profiles, therefore positively affecting coronary heart disease risk in the subjects.[xiii]

The high fatty acid content as well as fiber, antioxidants, potassium and magnesium, in the nuts also seemed to help normalize blood pressure levels.[xiv] In a randomized study, the combination of hazelnut and cocoa acted in a synergistic and protective way on the cardiovascular system.[xv]

4. Lower Blood Sugar Levels

Largely due to their micro and macronutrient profiles, nuts are believed to help control blood glucose levels.[xvi] They are low in available carbs, offer a healthy fatty acid profile and are high in fiber, plant protein and magnesium. In a study that combined hazelnuts with walnuts and almonds for metabolic syndrome patients, the results also reflected reduced fasting insulin levels.[xvii]

5. Potential Use Against Cancer

The high concentration of antioxidants, vitamins and minerals along with other nutrients in hazelnuts may also give the nut some anticancer action.

In a study, the nuts' shell extract provided antioxidant effects and cytotoxic activity against human cancer cell lines.[xviii] "The cytotoxic activity relies on the presence of the neolignans (balanophonin), and phenol derivatives (gallic acid), showing a pro-apoptotic effect on the tested cell lines," the researchers wrote.

Results from a separate study suggested a potential use of hazelnut extracts against cervical cancer, hepatocarcinoma and breast cancer.[xix]

Learn more about hazelnuts from study abstracts on the GreenMedInfo.com database. Incorporate these nuts into your diet as a snack or a component of many different dishes, enjoying them raw, roasted, sliced, ground or even whole. Peeled hazelnuts can also be turned into flour for healthy baking or as a nutrient-filled spread. Read more at: GreenMedInfo.com
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