Balance between Health Risks and Benefits for Outdoor Workers Exposed to Solar Radiation: An Overview on the Role of Near Infrared Radiation Alone and in Combination with Other Solar Spectral Bands
Level 5 - mechanism / opinion, no new human data
Narrative overview synthesizing mechanistic, bench, and in vitro literature without original human empirical data or systematic review methodology.
OpenAlex W3008773849 · doi:10.3390/ijerph17041357
What was done
This narrative overview examined mechanistic, in vitro, and in vivo literature on solar near-infrared (infrared A or IRA) radiation, alone and in combination with ultraviolet and visible light, to assess its implications for outdoor worker risk management.
What was found
The abstract reports no numerical outcome values or statistical estimates. It notes that IRA comprises over 40% of the solar spectrum, reaches the retina and subcutaneous tissues, stimulates reactive oxygen species production, affects mitochondrial respiratory chains, and alters gene expression and metabolic pathways. The authors report that few in vivo studies and no epidemiological data currently exist regarding the combined health balance of solar spectral exposure in outdoor workers.
Why it matters
Occupational health guidelines focus almost exclusively on solar ultraviolet radiation; incorporating near-infrared mechanisms may improve occupational risk modeling and protective gear design for outdoor workers.
Limits
The review relies primarily on in vitro and mechanistic models, lacks systematic review methods, and notes an absence of direct epidemiological or clinical human data.
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