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Claim
Strong Support
causal
Analysis v4

In men with coronary artery disease, replacing refined rice with whole grain and legume powder for 16 weeks raises blood levels of α-carotene, retinol, and α-tocopherol by 11% to 40%, reflecting...

56
Pro
0
Against

Mechanism

Synthesis from 1 study

How it works

Switching from white rice to whole grains and beans slows down how fast sugar enters the blood, which lowers insulin levels and reduces damage to fats in the body. With less fat damage, antioxidant vitamins like alpha-carotene, retinol, and alpha-tocopherol are not used up as fast, so their levels...

Most probable mechanism

In Simple Terms

When refined rice is replaced with whole grain and legume powder, digestion slows down, causing less sugar to enter the blood after meals. This reduces the amount of insulin the body needs to produce, which improves how well cells respond to insulin. Better insulin response lowers the production of harmful free radicals and reduces damage to fats in the blood. With less fat damage, antioxidant vitamins like alpha-carotene, retinol, and alpha-tocopherol are not used up as quickly, so their levels in the blood rise.

Causal chain
1

Whole grain and legume powder contains high levels of dietary fiber and complex carbohydrates that resist rapid enzymatic digestion, slowing gastric emptying and intestinal glucose absorption.

Verified by multiple studies
which leads to
2

Slower glucose absorption reduces postprandial blood sugar spikes, leading to decreased insulin secretion demand.

Verified by multiple studies
which leads to
3

Chronic reduction in insulin demand improves insulin receptor sensitivity in peripheral tissues, enhancing metabolic efficiency and reducing systemic oxidative stress.

Verified by multiple studies
which leads to
4

Improved insulin sensitivity suppresses the generation of reactive oxygen species and reduces lipid peroxidation in cell membranes and LDL particles.

Verified by multiple studies
which leads to
5

Reduced lipid peroxidation decreases the consumption of lipid-soluble antioxidant vitamins such as alpha-carotene, retinol, and alpha-tocopherol, allowing their concentrations in serum to increase.

Verified by multiple studies

Evidence from Studies

Supporting (1)

56

Community contributions welcome

56

Consumption of Whole Grain and Legume Powder Reduces Insulin Demand, Lipid Peroxidation, and Plasma Homocysteine Concentrations in Patients With Coronary Artery Disease: Randomized Controlled Clinical Trial

Randomized Controlled Trial
Human
2001 Dec

Contradicting (0)

0

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No contradicting evidence found

Gold Standard Evidence Needed

According to GRADE and EBM methodology, here is what ideal scientific evidence would look like to definitively prove or disprove this specific claim, ordered from strongest to weakest evidence.

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Source Study

Consumption of Whole Grain and Legume Powder Reduces Insulin Demand, Lipid Peroxidation, and Plasma Homocysteine Concentrations in Patients With Coronary Artery Disease: Randomized Controlled Clinical Trial

Score: 56
DOI: 10.1161/HQ1201.100258

Similar Assertions

In men with coronary artery disease, substituting refined rice with whole grain and legume powder for 16 weeks raises the level of n-6 fatty acids in blood cell membranes by 14%, which changes the physical properties of the membranes and affects inflammatory signaling molecules.

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In men with coronary artery disease, replacing refined rice with whole grain and legume powder for 16 weeks lowers levels of two biomarkers of oxidative stress in the blood and urine by about 28%.

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In men with coronary artery disease, replacing refined rice with an equal amount of whole grain and legume powder daily for 16 weeks lowers fasting blood glucose by 24% and fasting insulin by 14%, improves insulin sensitivity, and reduces the total glucose and insulin response during a sugar tolerance test.

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In men with coronary artery disease, substituting refined rice with whole grain and legume powder for 16 weeks lowers plasma homocysteine levels by about 32%, regardless of folate level changes.

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