Primary Causes & Action Plans

HbA1c

Diagnostic marker for prediabetes (5.7-6.4%) and diabetes (>6.5%)
HbA1c of 5.7-6.4% defines prediabetes. At this level, average blood glucose has been elevated for months to years, indicating significant hyperglycemia despite normal fasting glucose. Intensive intervention can still reverse it.
Target < 5.7% (normal); 5.7-6.4% prediabetes
Suggested Action Plan

Reduce HbA1c through low-carb diet (40-60g carbs daily), exercise 150+ minutes weekly, lose 5-10% body weight, and improve sleep/stress. Retest every 3 months to confirm improvement toward normal (<5.7%).

Fasting Glucose

Elevated fasting glucose (100-125 mg/dL) defines prediabetes
Fasting glucose of 100-125 mg/dL indicates prediabetes. At this level, insulin resistance is advanced and pancreatic beta cells are beginning to lose compensatory capacity. Rapid intervention can prevent progression.
Target < 90 mg/dL (optimal); < 100 mg/dL (normal)
Suggested Action Plan

Lower fasting glucose through carbohydrate restriction, morning walks after breakfast, regular exercise, and weight loss. Fasting glucose improves relatively quickly (4-8 weeks) with consistent intervention.

Fasting Insulin

Markedly elevated in prediabetes; indicates advanced insulin resistance
By prediabetes stage, fasting insulin is typically >8-10 mIU/mL (often much higher). This indicates the pancreas is desperately overproducing insulin to maintain normal glucose. Beta cell exhaustion is imminent.
Target < 5 uIU/mL
Suggested Action Plan

Fasting insulin is the most important metric to drive your intervention. Lower it aggressively through carbohydrate restriction, intermittent fasting (14-16 hours), and exercise. Retest every 8 weeks to confirm improvement.

Triglycerides

Often markedly elevated (>150-200 mg/dL) in prediabetes
Prediabetes is accompanied by severe insulin resistance reflected in elevated triglycerides. Many prediabetics have triglycerides >200 mg/dL, reflecting metabolic syndrome.
Target < 100 mg/dL (optimal); < 150 mg/dL (acceptable)
Suggested Action Plan

Triglycerides respond rapidly to carbohydrate restriction: often dropping 20-30% within 4 weeks of low-carb diet. Omega-3 supplementation and regular exercise amplify the effect. Retest monthly initially.

hs-CRP

Chronic inflammation in prediabetes; indicates systemic metabolic dysfunction
hs-CRP is often elevated (>1.0 mg/L) in prediabetes, reflecting the chronic systemic inflammation that accompanies severe insulin resistance. Reducing inflammation is part of diabetes prevention.
Target < 1.0 mg/L
Suggested Action Plan

Lower hs-CRP through Mediterranean diet, omega-3 fatty acids, regular exercise, weight loss, and stress management. Anti-inflammatory effects take 4-8 weeks to appear but compound over time.

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Getting Started

1
Recognize Prediabetes as a Serious Warning

Prediabetes means your blood sugar control is deteriorating. Without intervention, type 2 diabetes is likely within 5 years. But this is also your window to prevent diabetes entirely. Treat prediabetes with the urgency it deserves.

2
Get Intensive Metabolic Testing

Test HbA1c, fasting glucose, fasting insulin, HOMA-IR, triglycerides, and hs-CRP. These metrics define your starting point and guide your intervention strategy.

3
Adopt Aggressive Lifestyle Intervention

This is not a time for modest changes. Adopt a low-carbohydrate diet (40-60g carbs daily). Exercise 60 minutes daily if possible (or 150+ minutes weekly minimum). Lose 5-10% of body weight. Sleep 8+ hours nightly. These interventions are as powerful as diabetes drugs.

4
Monitor Progress Every 8 Weeks

Retest HbA1c, fasting glucose, and fasting insulin every 8 weeks. You should see consistent improvement. HbA1c drops 0.1-0.2% per month with aggressive intervention. Fasting insulin often drops 30-50% within 3 months.

5
Consider Metformin if Lifestyle Alone Fails

If after 3 months of aggressive lifestyle intervention your metrics are not improving, metformin is a reasonable addition. It is safe, inexpensive, and improves insulin sensitivity. Retest after 8-12 weeks on metformin.

Why I built this guide.

"Prediabetes is reversible. The window to prevent type 2 diabetes is open—but only for a few years. Act now."

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