Nuts: source of energy and macronutrients
- 1 November 2006
- journal article
- review article
- Published by Cambridge University Press (CUP) in British Journal of Nutrition
- Vol. 96 (S2), S24-S28
- https://doi.org/10.1017/bjn20061860
Abstract
On the basis of the high fat content of nuts, they are traditionally considered as foods that provide a high amount of energy. However, epidemiologic and clinical observations do not indicate an association between nut intake and increased BMI. There is a notorious variability in macronutrient composition among nuts, although they have some consistent patterns. Nuts contain all major macronutrients: protein, carbohydrate, and fat. The total protein content is relatively high, which makes them a good source of plant protein (especially for vegetarians). Although nuts contain low amounts of some essential amino acids, this is not a nutritional concern due to the complement of protein. In addition, nuts have a low lysine:arginine ratio, which is inversely associated with the risk of developing hypercholesterolemia and atherosclerosis. Carbohydrates are the second highest macronutrient in nuts in terms of total calories provided. The fat fraction is characterized by a high amount of unsaturated fatty acids and a low content of saturated fatty acids. In conclusion, the high content in unsaturated fatty acids, the low lysine:arginine ratio, and the presence of other bioactive molecules (such as fibre, phytosterols, vitamin and other antioxidants, and minerals) make the addition of nuts to healthy diets a useful tool for the prevention of cardiovascular heart diseases.Keywords
This publication has 36 references indexed in Scilit:
- Fatty acid composition of nuts – implications for cardiovascular healthBritish Journal of Nutrition, 2006
- Atherosclerotic Vascular Disease ConferenceCirculation, 2004
- Nut consumption, body weight and insulin resistanceEuropean Journal of Clinical Nutrition, 2003
- Effects of Energy-Restricted Diets Containing Increased Protein on Weight Loss, Resting Energy Expenditure, and the Thermic Effect of Feeding in Type 2 DiabetesDiabetes Care, 2002
- Influence of variety and geographical origin on the lipid fraction of hazelnuts (Corylus avellana L.) from Spain: I. Fatty acid compositionFood Chemistry, 1993
- Associations of fish intake and dietary n-3 polyunsaturated fatty acids with a hypocoagulable profile. The Atherosclerosis Risk in Communities (ARIC) Study.Arteriosclerosis and Thrombosis: A Journal of Vascular Biology, 1993
- Plasma amino acids and the insulin/glucagon ratio as an explanation for the dietary protein modulation of atherosclerosisMedical Hypotheses, 1991
- Effect of dietary protein on serum insulin and glucagon levels in hyper- and normocholesterolemic menAtherosclerosis, 1989
- Testing a mechanism of control in human cholesterol metabolism: relation of arginine and glycine to insulin and glucagonAtherosclerosis, 1988
- Dietary Protein-Dependent Modification of Serum Cholesterol Level in RatsAnnals of Nutrition and Metabolism, 1984