NIH MeSH · D000095743Phenomena and Processes
Blue Light
Also known asLight, Blue
Definition
That portion of the electromagnetic spectrum with wavelengths between 450 to 495 nm. Exposure to blue light at night can suppress the secretion of melatonin, disrupt sleep, and cause shifts in CIRCADIAN RHYTHM.
MeSH classification
- G01.358.500.505.650.220
- G01.590.540.100
- G01.750.250.650.220
- G01.750.770.578.220
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What does Blue Light mean in medicine?
That portion of the electromagnetic spectrum with wavelengths between 450 to 495 nm. Exposure to blue light at night can suppress the secretion of melatonin, disrupt sleep, and cause shifts in CIRCADIAN RHYTHM. This definition is taken from the National Library of Medicine's MeSH (Medical Subject Headings) 2026 release, which is the standard vocabulary used to index PubMed and most medical literature.
Is Blue Light known by any other names?
Yes. Blue Light is also referred to as Light, Blue in different clinical, research and patient-facing contexts. The MeSH descriptor groups all of these synonyms under a single canonical concept so research and records stay consistent.
Where does Blue Light sit in the medical classification?
Blue Light falls under the broader medical category "Phenomena and Processes" in the MeSH hierarchy (tree numbers: G01.358.500.505.650.220, G01.590.540.100, G01.750.250.650.220). Browsing the related concepts on this page takes you to neighbouring topics in the same branch of medicine.
Where can I get a plain-language explanation of Blue Light?
For a plain-language explanation of Blue Light - including symptoms, treatments and what it means for an Indian patient - ask GoDavaii's Health AI. It works in 90+ languages, is free and needs no signup. Tap "Ask GoDavaii AI about Blue Light" above.
Source: NIH MeSH 2026 (D000095743) — National Library of Medicine, public domain. View official MeSH record ↗