Clin Nutr Res.  2015 Apr;4(2):69-75. 10.7762/cnr.2015.4.2.69.

Carbohydrates and Endothelial Function: Is a Low-Carbohydrate Diet or a Low-Glycemic Index Diet Favourable for Vascular Health?

• Jovanovski E
• Zurbau A
• Vuksan V

• KMID: 2279352
• DOI: http://doi.org/10.7762/cnr.2015.4.2.69

Abstract

Low-carbohydrate diets have become increasingly popular in both media and clinical research settings. Although they may improve some metabolic markers, their effects on arterial function remain unclear. Endothelial dysfunction is the well-established response to cardiovascular risk factors and a pivotal feature that precedes atherosclerotic diseases. It has been demonstrated that a high carbohydrate-induced hyperglycemia and subsequent oxidative stress acutely worsen the efficacy of the endothelial vasodilatory system. Thus, in theory, a carbohydrate restricted diet may preserve the integrity of the arterial system. This review attempts to provide insight on whether low-carbohydrate diets have a favorable or detrimental impact on vascular function, or it is perhaps the quality of carbohydrate that should direct dietary recommendations. Research to date suggests that diets low in carbohydrate amount may negatively impact vascular endothelial function. Conversely, it appears that maintaining recommended carbohydrate intake with utilization of low glycemic index foods generates a more favorable vascular profile. Understanding these relationships will aid in deciphering the diverging role of modulating quantity and quality of carbohydrates on cardiovascular risk.

Keyword

Carbohydrates; Glycemic index; Diet; Endothelium; Cardiovascular disease

MeSH Terms

Carbohydrates*
Cardiovascular Diseases
Diet*
Endothelium
Glycemic Index
Hyperglycemia
Oxidative Stress
Risk Factors
Carbohydrates

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