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Claim
Strong Support
causal
Analysis v4

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.

56
Pro
0
Against

Mechanism

Synthesis from 1 study

How it works

Whole grains and legumes slow down sugar absorption, which teaches the body to use insulin more efficiently. This improved insulin function activates enzymes that break down homocysteine, lowering its levels in the blood without needing more folate. Antioxidants in these foods help protect blood...

Most probable mechanism

In Simple Terms

Eating whole grains and legumes instead of refined rice slows down how fast sugar enters the blood, which reduces the amount of insulin the body needs to make. Over time, this makes cells more responsive to insulin, which allows the body to break down homocysteine more efficiently using existing metabolic pathways, lowering its levels in the blood without needing more folate.

Causal chain
1

Dietary fiber and complex carbohydrates in whole grains and legumes resist rapid enzymatic digestion, delaying glucose absorption in the small intestine

Verified by multiple studies
which leads to
2

Slower glucose absorption reduces postprandial blood sugar spikes and decreases demand for insulin secretion from pancreatic beta cells

Verified by multiple studies
which leads to
3

Chronic reduction in insulin demand increases insulin receptor sensitivity in skeletal muscle and liver tissue

Verified by multiple studies
which leads to
4

Improved insulin sensitivity enhances cellular uptake of homocysteine and activates transsulfuration and remethylation pathways that convert homocysteine to cysteine or methionine

Verified by multiple studies
which leads to
5

Increased flux through homocysteine metabolic pathways reduces plasma homocysteine concentration independently of folate availability

Verified by multiple studies

Less supported by current evidence, but not ruled out

In Simple Terms

Antioxidants from whole grains and legumes neutralize free radicals that damage blood vessels and interfere with homocysteine breakdown, allowing the body to clear homocysteine more effectively.

Causal chain
1

Dietary antioxidants including tocopherols, carotenoids, and phenolic compounds enter circulation and scavenge reactive oxygen species

Verified by multiple studies
which leads to
2

Reduced oxidative stress decreases lipid peroxidation and preserves endothelial function

Verified by multiple studies
which leads to
3

Lower oxidative burden enhances enzymatic activity of homocysteine-metabolizing enzymes such as cystathionine beta-synthase and methionine synthase

Supported by evidence
which leads to
4

Improved enzyme function increases conversion of homocysteine to non-toxic metabolites, reducing plasma concentration

Supported by evidence

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

Community contributions welcome

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, 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 higher antioxidant levels and better nutrient retention or less oxidative loss.

56
0
82%

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.

56
0
80%

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%.

56
0
78%

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.

56
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