The Claim

Replacing two daily meals of high-glycemic-index rice (Taiken9, GI=98) with low-glycemic-index rice (RD43, GI=78) containing 14.1 g of undigestible starch for 12 weeks in adults with prediabetes significantly reduces fasting plasma glucose, insulin, HbA1c, and HOMA-IR, and decreases body weight, BMI, total fat mass, and waist circumference.

Source: Improvement in the metabolic markers of prediabetic subjects due to the partial substitution of Taiken9 rice by RD43 rice in their daily diet: a randomized clinical trial.

What the research says

Supports is higher

Support is ahead, but a single strong opposing study can change this.

Supports
55score
Challenges
0score

These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.

Cause and effect
1 study reviewed
In plain English

In adults with prediabetes, substituting two daily meals of high-glycemic rice with a low-glycemic rice containing 14.1 g of undigestible starch for 12 weeks lowers fasting blood glucose, insulin, HbA1c, HOMA-IR, body weight, BMI, total fat mass, and waist circumference.

See the scientific wording

Replacing two daily meals of high-glycemic-index rice (Taiken9, GI=98) with low-glycemic-index rice (RD43, GI=78) containing 14.1 g of undigestible starch for 12 weeks in adults with prediabetes significantly reduces fasting plasma glucose, insulin, HbA1c, and HOMA-IR, and decreases body weight, BMI, total fat mass, and waist circumference, suggesting that dietary substitution with resistant starch-rich rice may improve metabolic health in this population.

Why this might work

When people eat rice with undigestible starch, the starch doesn't break down in the small intestine, so sugar enters the blood slowly. This keeps blood sugar from spiking after meals, which means the pancreas doesn't need to release as much insulin. Over time, lower insulin levels let the body's tissues respond better to insulin, lowering overall blood sugar and reducing fat storage.

Verified mechanismbased on 1 study

What the research says

1 study

  1. Study: Improvement in the metabolic markers of prediabetic subjects due to the partial substitution of Taiken9 rice by RD43 rice in their daily diet: a randomized clinical trial.

    People with prediabetes who swapped two meals a day from regular white rice to a special rice high in indigestible starch saw their blood sugar and insulin drop, and they lost a little weight and waist size — all good signs for preventing diabetes.

Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies

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