Can Red Light Actually Lower Blood Sugar? Early Clinical Trials Suggest a Real Signal (Not a Miracle)
Can photobiomodulation (red + near-infrared light) meaningfully improve glycemic control in people with type 2 diabetes? In this Deep Dive, Dr. Mike Belkowski breaks down a 2026 systematic review of randomized clinical trials that tested PBM for diabetes outcomes like fasting glucose, post-prandial glucose, and HbA1c.
The evidence base is small — only 4 RCTs met strict inclusion criteria (control/sham required) — but the signal was generally favorable: PBM was associated with reductions in fasting glucose, post-prandial glucose, and HbA1c, and in some studies improvements in lipid markers…
The skinny
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