Prediabetes Syndrome

Nutrients connected to Prediabetes Syndrome

A link means the body needs the nutrient for this, or that low intake is linked to it. It does not mean extra supplements help if your intake is already adequate; each link shows how strong the evidence is.

• Strawberries, Raspberries & BlackberriesPreliminary or mixed

  Small crossover trials in adults with prediabetes found better insulin and glucose measures with strawberries (12 weeks) and red raspberries (after one meal). These are markers, not prevention of diabetes.

• MangoPreliminary or mixed

  A 24-week trial (23 completers) found lower fasting glucose and better insulin sensitivity with daily mango vs a granola bar; very small.

• Whole-Wheat BreadPreliminary or mixed

  In one 2026 controlled crossover trial in adults with prediabetes, whole-wheat bread lowered the glucose rise after a sugar drink by 27% versus white bread.

• Yerba matePreliminary or mixed

  Two trials in people with prediabetes found lower after-meal glucose and HbA1c; the authors say this needs confirming.

• OkraPreliminary or mixed

  Some pooled trials included people with prediabetes; results are small and mixed.

• KimchiPreliminary or mixed

  One crossover trial in 21 adults with prediabetes found fermented kimchi lowered insulin resistance and blood pressure; small and short.

• Yerba MatePreliminary or mixed

  Two trials in people with prediabetes found lower after-meal glucose and HbA1c; the authors say this needs confirming and the preparations were not all tea.

• Mulberry Leaf TeaPreliminary or mixed

  30 adults with borderline diabetes had lower glucose and insulin after rice with a mulberry leaf and water chestnut tea; one meal.

• CarobPreliminary or mixed

  One 90-day trial of a carob liquid concentrate improved glucose markers. Concentrate, not powder.

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