Light & Neurons. Injured and non-injured adult neurons had “more rapid” regeneration when red LED light was applied for only 4 minutes in this study. Pretty cool considering neurons are the core components of the brain and spinal cord of the central nervous system (CNS), and of the ganglia of the peripheral nervous system (PNS). They don’t regrow by cell division. They have to regenerate. Personally I am glad that my family has this tool to support our body’s innate healing. Especially with my soccer player and my mountain biker taking some hits and falls. Here is the study:

J Biophotonics. 2015 Jun;8(6):480-8. doi: 10.1002/jbio.201400052. Epub 2014 Jul 30.

Neurite growth acceleration of adult Dorsal Root Ganglion neurons illuminated by low-level Light Emitting Diode light at 645 nm.

Burland M^1,², Paris L^1,^3,⁴, Quintana P¹, Bec JM², Diouloufet L¹, Sar C¹, Boukhaddaoui H¹, Charlot B³, Braga Silva J⁵, Chammas M¹, Sieso V¹, Valmier J^1,⁶,Bardin F^3,⁴.

Author information

Abstract

The effect of a 645 nm Light Emitting Diode (LED) light irradiation on the neurite growth velocity of adult Dorsal Root Ganglion (DRG) neurons with peripheral axon injury 4-10 days before plating and without previous injury was investigated. The real amount of light reaching the neurons was calculated by taking into account the optical characteristics of the light source and of media in the light path. The knowledge of these parameters is essential to be able to compare results of the literature and a way to reduce inconsistencies. We found that 4 min irradiation of a mean irradiance of 11.3 mW/cm(2) (corresponding to an actual irradiance reaching the neurons of 83 mW/cm(2)) induced a 1.6-fold neurite growth acceleration on non-injured neurons and on axotomized neurons. Although the axotomized neurons were naturally already in a rapid regeneration process, an enhancement was found to occur while irradiating with the LED light, which may be promising for therapy applications. Dorsal Root Ganglion neurons (A) without previous injury and (B) subjected to a conditioning injury.

KEYWORDS:

DRG; LED; dorsal root ganglion neuron; light emitting diode; low-level light therapy; neurite growth; peripheral nerve injury

PMID:: 25077453; [PubMed – in process]