Comparison of LEDs and Lasers

This podcast episode discusses the comparison between LEDs and lasers in the context of medical laser therapy. The main debate revolves around whether lasers have unique properties that regular light bulbs (LEDs) don't. The episode highlights a research study that examines the effects of different wavelengths of light on mitochondrial redox metabolism and hemoglobin oxygenation. The study reveals that all three lasers tested (800, 850, and 1064nm) enhance mitochondrial activity, oxygenation, and blood flow in the human forearm, while the 1064nm laser demonstrates more sustained effects than the others. Additionally, the 810nm LED shows similar effects to the 800nm laser, but with less power. The importance of irradiance and the need for reputable LED units with sufficient intensity is emphasized. Overall, a clinician's choice between LEDs and lasers depends on their specific treatment goals.