Dried fruit, an ancient rediscovered superfood

Heart and arteries: documented cardiovascular benefits

The evidence on  reduction of cardiovascular risk represent the most solid field of research on dried fruit. Glenn et al. (2023), in a review published in Nutrients, documented that high consumption of dried fruit is associated with a 19% reduction in the incidence of cardiovascular diseases and of 25% of cardiovascular mortality. The reduction of coronary heart disease risk is even more marked: 24% for incidence and 27% for mortality.

A meta-analysis of 61 randomized clinical trials confirmed that dried fruit consumption produces  significant improvements in lipid profile, with reduction of LDL cholesterol, triglycerides, and improvement of the HDL/total cholesterol ratio (Del Gobbo et al., 2015). The mechanisms include the replacement of saturated fatty acids with  monounsaturated and polyunsaturated fatty acids, the intake of phytosterols, the antioxidant action of tocopherols, and the modulation of systemic inflammation.

Mateș et al. (2025) recently demonstrated through a  randomized controlled study that the daily consumption of walnuts for just 4 weeks produces significant improvements in metabolic parameters in middle-aged adults at risk of metabolic syndrome, confirming that benefits can manifest quickly.

Weight management: why dried fruit does not cause weight gain

Contrary to concerns related to high energy density, research shows that regular nut consumption within a balanced diet is not associated with weight gain. Campos and Egea (2025), in a narrative review published in  Nutrients, documented that nut ingestion can  regulate adipokine expression in individuals with overweight and obesity, favorably modulating lipid metabolism and adiposity.

This seemingly paradoxical phenomenon is explained by several mechanisms:

• the  complex food matrix limits lipid bioavailability (studies show that about 5-30% of calories are not absorbed);

• the high content of  fiber and protein increases satiety;

• nut consumption can lead to  spontaneous dietary compensations with reduction in intake of other less healthy foods (de Souza et al., 2017).

Microbiota and intestine: the role of bioactive compounds

Mandalari et al. (2023) provided convincing evidence on the effect of nuts on  gastrointestinal health. The study published in  Nutrients demonstrated that the bioactive compounds and fibers present in nuts promote a  beneficial microbiota composition, with an increase in short-chain fatty acid (SCFA) producing bacteria.

These bacterial metabolites exert  multiple protective effectsstrengthening of the intestinal barrier, modulation of the immune response, regulation of systemic inflammation and improvement of insulin sensitivity. Research suggests that these effects on the microbiota may significantly contribute to the metabolic and cardiovascular benefits observed in epidemiological studies.

Type 2 diabetes: prevention and glycemic control

The evidence on the role of nuts in  prevention of type 2 diabetes are particularly promising. Nishi et al. (2023), in a narrative review published in Nutrients, concluded that nut consumption may play a significant role in both the prevention and management of type 2 diabetes, with mechanistic studies supporting this possibility.

A meta-analysis of observational studies has highlighted aninverse association between nut consumption and incidence of type 2 diabetes, although with some heterogeneity among studies (Becerra-Tomás et al., 2021). Clinical trials have shown that replacing carbohydrates with nuts improves  glycemic control (HbA1c reduction) and  lipid profile in diabetic patients (Jenkins et al., 2011).

The  Dietary Guidelines for Americans 2025-2030 and the American Diabetes Association guidelines recommend dietary patterns including nuts for the prevention and management of diabetes (Talegawkar et al., 2024).

Brain and cognition: the new frontier against dementia

One of the most interesting developments in recent research concerns  cognitive protection. Bizzozero-Peroni et al. (2025) analyzed data from the  UK Biobank (prospective cohort study) on over 50,000 adults, demonstrating that regular nut consumption is associated with a  significant reduction in risk of all-cause dementia. The study, published in  GeroScience (Q1), highlighted a dose-response association, with the greatest benefits observed for intakes of at least 10 grams per day.

The authors hypothesize that this protective effect is mediated by several mechanisms: antioxidant and anti-inflammatory properties, improvement of cerebral vascular health, modulation of lipid and glucose metabolism, and potential direct effects of bioactive compounds (particularly plant omega-3s in walnuts) on neuronal function.

Barbour et al. (2023), in a narrative review on  Nutrients, have discussed the available evidence on the impact of nut consumption on  cognition across the lifespan, concluding that, although limited, the evidence suggests a possible role in maintaining cognitive health, particularly in older adults and high-risk subjects.

Healthy aging: counteracting sarcopenia and frailty

Xu et al. (2025) recently identified an inverse association between nut consumption and sarcopenia in adults elderly Chinese. The study, published in  Scientific Reports (Q1), analyzed data from 3,286 people (mean age 85 ± 11 years, 55% women), showing that nut consumers had a  significantly lower risk of sarcopenia compared to non-consumers.

The authors suggest that the nutritional profile of Dried fruit – high-quality proteins, essential micronutrients (magnesium, zinc, selenium), vitamin E, and bioactive compounds – may contribute to  maintaining muscle mass and function in aging, representing a preventive nutritional strategy against frailty.

Rusu et al. (2019) systematically examined the benefits of nut consumption in the  over-55 population, highlighting positive effects on oxidative stress, endothelial function, lipid profile, and glycemic control, emphasizing how these foods may represent a particularly appropriate nutritional intervention for the prevention of chronic-degenerative diseases related to aging.

Reduction of mortality: evidence from prospective studies

The most convincing evidence comes from  prospective cohort studies on mortality. Aune et al. (2016), in a meta-analysis of 20 prospective studies published in  BMC Medicine, demonstrated that high nut consumption is associated with a  22% reduction in all-cause mortality, 21% reduction in cardiovascular mortality, and 11% reduction in cancer mortality.

Dose-response analysis showed that most benefits are achieved with relatively modest intakes (15-20 grams per day), with a plateau of protective effects around 28-30 grams per day. This suggests that even small changes in eating habits can produce significant benefits.

Bao et al. (2013), analyzing data from the Nurses’ Health Study and the Health Professionals Follow-up Study (over 118,000 participants followed for 30 years), confirmed that daily consumption nut consumption is associated with a significant reduction in mortality from cardiovascular diseases, cancer, and respiratory diseases, even after adjustment for multiple confounding factors.

Recently, Shin et al. (2024) analyzed a Korean cohort of over 114,000 adults followed for 12 years, demonstrating that  only two weekly servings of nuts are associated with a 12% reduction in all-cause mortality, confirming that benefits are attainable even with modest consumption.

Cancer prevention: state of research

The evidence on the role of nuts in  cancer prevention is progressively expanding, although further confirmation is needed. A meta-analysis published in  Cancer Epidemiology, Biomarkers & Prevention has shown that nut consumption is associated with a 10% reduction in overall cancer risk and a 17% reduction in digestive system cancers (Yang et al., 2016).

Observational studies have suggested possible  protective associations for specific tumors, including colorectal, endometrial, and pancreatic carcinoma. Proposed mechanisms include antioxidant and anti-inflammatory effects, modulation of cell proliferation, induction of apoptosis, and modulation of the gut microbiota (González & Salas-Salvadó, 2006).

However, it is important to emphasize that the American Institute for Cancer Research (AICR) classifies the evidence as ‘limited’, highlighting the need for further prospective studies and clinical trials to confirm these associations and clarify the mechanisms of action.

Doses and consumption: how to maximize benefits

Scientific literature agrees on a  optimal dose of about  28-30 grams per day (equivalent to a small handful), an amount that maximizes health benefits without risk of weight gain. This dose approximately corresponds to:

• 23 almonds;

• 14 walnuts;

• 23-25 hazelnuts;

• 49 pistachios.

The  Dietary Guidelines for Americans 2020-2025 recommend about  5 servings of 28 grams per week (equivalent to about 20 grams per day on average) as part of a balanced diet. Nuts can be consumed as snacks, added to cereals, yogurt, salads, or incorporated in recipes,  unsalted and not roasted to maximize nutritional benefits.

Regulatory framework: between ‘superfood’ and ‘health claim’

‘superfood’ is a term lacking a formally recognized scientific definition, as well as a legal framework. It is used in educational and marketing contexts to indicate foods to which potential health benefits are attributed based on different levels of scientific evidence, with particular favor towards controlled clinical studies and systematic reviews.

The only ‘health claim’ specifically referring to nuts now authorized in the European Union is: ‘walnuts contribute to the improvement of blood vessel elasticity’. This indication can be used only for a food that provides a daily intake of 30 g of walnuts and must be accompanied by information to the consumer that the beneficial effect is obtained with the daily consumption of 30 g of walnuts (Reg. EU No. 432/12).

I potential benefits for health associated with regular consumption of nuts emerging from the recent studies mentioned above – published in high and medium impact scientific journals (Q1-Q2) – deserve further investigation, also to support new ‘health claim’ authorization requests. Our team of FARE (Food and Agriculture Requirements) is available to operators and interested associations.

Provisional conclusions

Thedaily integration of 20-30 grams of nuts represents one of the most effective and accessible nutritional strategies to promote public health and healthy longevity. Although science is rapidly confirming benefits ranging from neuroprotection to muscle health, the European regulatory framework remains cautious. It is essential that the agri-food supply chain values this evidence, supporting new ‘health claim’ applications to offer consumers transparent and scientifically validated information.

Dario Dongo

Image by Larysa Zubrytska from Pixabay

Technical sheet: dried fruit and health

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