Dietary carbohydrate restriction induces a unique metabolic state positively affecting atherogenic dyslipidemia, fatty acid partitioning, and metabolic syndrome

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URL: https://www.sciencedirect.com/science/article/abs/pii/S0163782708000167?via%3Dihub

Journal: Progress in Lipids Research

Publication Date: 09/2008

Summary: Abnormal fatty acid metabolism and dyslipidemia play an intimate role in the pathogenesis of metabolic syndrome and cardiovascular diseases. The availability of glucose and insulin predominate as upstream regulatory elements that operate through a collection of transcription factors to partition lipids toward anabolic pathways. The unraveling of the details of these cellular events has proceeded rapidly, but their physiologic relevance to lifestyle modification has been largely ignored. Here we highlight the role of dietary input, specifically carbohydrate intake, in the mechanism of metabolic regulation germane to metabolic syndrome. The key principle is that carbohydrate, directly or indirectly through the effect of insulin, controls the disposition of excess dietary nutrients. Dietary carbohydrate modulates lipolysis, lipoprotein assembly and processing and affects the relation between dietary intake of saturated fat intake and circulating levels. Several of these processes are the subject of intense investigation at the cellular level. We see the need to integrate these cellular mechanisms with results from low-carbohydrate diet trials that have shown reduced cardiovascular risk through improvement in hepatic, intravascular, and peripheral processing of lipoproteins, alterations in fatty acid composition, and reductions in other cardiovascular risk factors, notably inflammation. From the current state of the literature, however, low-carbohydrate diets are grounded in basic metabolic principles and the data suggest that some form of carbohydrate restriction is a candidate to be the preferred dietary strategy for cardiovascular health beyond weight regulation.

Key Takeaways

Dietary carbohydrate intake is linked to the ability of the body to process the nutrients we consume by modulating fat breakdown and the assembly of fat carrier proteins in the body. This can lead to negative changes in saturated fat circulation in the body. These cellular mechanisms driven by dietary carbohydrate intake indicate that carbohydrate restriction can be an effective dietary treatment strategy for heart disease and weight loss.

Cellular Mechanisms Underlying Heart Disease Treatable With Carbohydrate Restriction

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