Effects of Hazelnut Consumption on Cardiometabolic Risk Factors and Acceptance: A Systematic Review

Rachel Brown, Lara Ware and Siew Ling Tey
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Rachel Brown: Department of Human Nutrition, University of Otago, Dunedin 9054, New Zealand
Lara Ware: Department of Human Nutrition, University of Otago, Dunedin 9054, New Zealand
Siew Ling Tey: Department of Human Nutrition, University of Otago, Dunedin 9054, New Zealand

IJERPH, 2022, vol. 19, issue 5, 1-50

Abstract: Despite being rich sources of monounsaturated fat and a number of vitamins, minerals, and phytonutrients, hazelnuts have received less attention than some other nut types. A qualitative systematic review was carried out to determine the effects of hazelnut consumption on acceptance and markers of cardiometabolic health, including blood lipids and lipoproteins, apolipoproteins A1 and B100, body weight and composition, blood pressure, glycemia, antioxidant status, oxidative stress, inflammation, and endothelial function. In total, 22 intervention studies (25 publications) met our inclusion criteria. The findings indicate some improvements in cardiometabolic risk factors; however, limitations in study design mean interpretation is problematic. The inclusion of hazelnuts in the diet did not adversely affect body weight and composition. Acceptance of hazelnuts remained stable over time confirming nut consumption guidelines are feasible and sustainable. Future studies using more robust study designs in a variety of populations are required to draw more definitive conclusions on the health benefits of hazelnut consumption.

Keywords: hazelnuts; blood lipids and lipoproteins; apolipoproteins; body weight and composition; blood pressure; glycaemia; oxidative stress; inflammation; endothelial function; acceptance (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2022
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