Equipment Reference
Levels
Levels Continuous Glucose Monitor
Real-time metabolic feedback to optimize your diet
Levels wraps FDA-approved continuous glucose monitors (CGMs) in a polished app that scores meals, tracks metabolic health, and reveals how food, exercise, sleep, and stress affect your blood sugar. Dave Asprey and metabolic health advocates use CGMs to identify 'glucose spikers' in their diet, foods that cause crashes, brain fog, and fat storage even if they're 'healthy.'
Typical price: $199/mo (includes sensors + app)
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How It Works
Blood glucose stability is foundational to metabolic health. Spikes above 140 mg/dL trigger insulin release, inflammation, and oxidative stress, even in non-diabetics. CGMs reveal that identical foods affect different people differently (your oatmeal spike may be my flat line). Levels makes this visible, enabling personalized nutrition instead of generic diet advice.
Sensor Application
A small filament sensor is applied to the back of your upper arm. It measures interstitial glucose every 5 minutes for 14 days.
Real-Time Streaming
Glucose data streams to the Levels app via NFC scan or Bluetooth. See your response to every meal in real-time.
Meal Scoring
Each meal gets a 0–10 score based on glucose peak, area under curve, and recovery time. Build a personal food ranking.
Lifestyle Correlation
Track how sleep quality, exercise timing, stress, and meal order affect your glucose response.
What You'll Experience
First Sensor
Days 1–3Sensor insertion is painless (filament is hair-thin). Fascinating to watch glucose respond to everything you eat. Surprises are common, 'healthy' foods spiking hard.
Food Discovery
Weeks 1–2You discover your personal glucose triggers. Common surprises: oats, grapes, sushi rice, and smoothies spike harder than expected. Vinegar, walking, and meal order help.
Behavior Change
Weeks 3–4Diet naturally shifts toward lower-spike foods. Energy stabilizes. Afternoon crashes diminish. Many users lose weight without calorie counting.
Metabolic Awareness
Month 2+Even after stopping CGM, food choices remain improved. Periodic re-use (monthly sensor) maintains awareness. Fasting glucose and HbA1c often improve.
Benefits
Personalized Nutrition
Strong EvidenceReveals YOUR glucose response to foods, not population averages. Individual variation is enormous.
Energy & Focus Stability
Moderate EvidenceEliminating glucose spikes reduces afternoon crashes, brain fog, and cravings.
Weight Management
Moderate EvidenceStable glucose reduces insulin-driven fat storage. Users commonly lose weight through awareness alone.
Prediabetes Detection
Strong EvidenceReveals metabolic dysfunction years before fasting glucose or HbA1c would flag it.
Risks & Considerations
Ongoing Cost
medium risk$199/mo includes sensors. Adds up to $2,400/year for continuous use. Intermittent use (1 sensor/month) is more affordable.
Obsessive Tracking
low riskSome users become anxious about every glucose point. Use trends, not individual readings.
Sensor Limitations
low riskCGMs measure interstitial fluid, not blood, 5–15 min lag. Accuracy varies in first 24 hours.
Prescription Required (US)
medium riskLevels handles prescription logistics, but availability varies by country.
Community Reviews
Synthesized consensus from Reddit, forums, and expert sources.
Users call it 'the most impactful health tool I've used.' Food surprise factor is the main hook. Cost is the main barrier.
- ·Oatmeal spiked me to 180, never eating it again
- ·Walking after meals cuts spikes by 30–50%
- ·Stelo (Abbott OTC) is cheaper alternative at $99/mo
- ·One month is enough to learn your triggers
CGM is top-3 recommended biohacking tool after sleep tracking. Levels app UX is best-in-class.
- ·Dave Asprey's #1 recommended starting point
- ·Meal order matters: veggies first, carbs last
- ·Apple cider vinegar before meals helps spikes
Learn More: Full Guides
Diagnostics & TestingContinuous Glucose Monitoring: The Complete Guide
A continuous glucose monitor (CGM) reveals how YOUR body responds to food in real-time, not population averages. Dave Asprey calls it the most impactful health tool he's used. This guide covers how CGMs work, what you'll learn, and how to use the data to optimize energy, weight, and long-term metabolic health.
Read guide
Diagnostics & TestingGut Microbiome: The Complete Guide
Your gut microbiome, 100 trillion bacteria, influences immunity, mood, metabolism, and inflammation. Bryan Johnson tests his monthly. This guide covers microbiome testing, evidence-based interventions, and what actually moves the needle vs marketing.
Read guideLast updated: 2026-07-11 · Informational only. Not medical advice.