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NASA began investigating the healing properties of red light therapy in the 1980s, when researchers studying how LED lights could aid in photosynthesis noticed that their hands seemed to heal faster than normal under the lights.
Findings
Additional insights we found via NASA
Although near-infrared laser light can also speed wound healing by increasing growth-factor proteins, collagen, and blood vessel production, lasers are riskier than LED lights because their intensity can damage non-target tissue.
Early NASA-funded research laid the groundwork for a US FDA-approved device for treating pain, inflammation, and minor injuries in military personnel. That device was adapted and commercialized in 2007.
NASA-sponsored work enabled the advent of home light therapy devices.
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