How Long Should You Use Red Light Therapy for Blood Sugar?

Most human studies investigating red light therapy (RLT) for blood sugar regulation have used sessions lasting around 15 minutes, typically targeting the upper back or large muscle areas with 670–850 nm light. This duration appears to provide enough mitochondrial stimulation to trigger a metabolic response without the risk of overexposure.

✅ A single 15-minute session using a 670 nm wavelength has been associated with reduced post-meal glucose spikes in healthy adults—suggesting improved glucose uptake and insulin sensitivity.

📅 Frequency recommendations vary based on your goals, device strength, and individual response. A general protocol might look like:
Therapeutic goal (e.g., metabolic support): 3–5 sessions per week
Maintenance/overall wellness: 2–3 sessions per week
Initial trial period: Daily for 1–2 weeks, followed by reassessment

🧠 Consistency is key. Results are typically seen over time with repeated sessions, as RLT has a cumulative effect on cellular function and metabolic flexibility.

⚠️ If you’re using a high-output panel, shorter sessions or reduced frequency may be appropriate. Always follow the manufacturer’s guidelines and consult your healthcare provider if you have a chronic condition like diabetes.