Blue Light Reduction
Dim lights and avoid screens 2-3 hours before bed to protect melatonin production. Use warm/amber lighting and blue-light blocking glasses if screen use is unavoidable.
- Time
- 2-3 hours/evening
- Cost
- $0-20
- Equipment
- Blue light blocking glasses (optional) +1 more
- Min. Trial
- 1-2 weeks
Dosage & Timing
- Duration
- 2-3 hours before bed
- Frequency
- Daily
- Best Time
- evening
Evidence Strength
4/5 — StrongStrong mechanistic evidence for melatonin suppression by blue light. Practical effect size varies by individual sensitivity and implementation.
Overview
Minimize exposure to bright artificial light, especially blue-wavelength light, in the 2-3 hours before bedtime. This prevents suppression of melatonin production and supports natural sleep onset.
Wellness education and routine support only. Review the evidence, caveats, and interactions before trying this protocol, and ask a clinician when medical conditions, pregnancy, medications, or symptoms are involved.
How To Do It
- 1
Set a light curfew
2-3 hours before your target bedtime, begin dimming overhead lights.
- 2
Switch to warm lighting
Use lamps with warm/amber bulbs instead of overhead fluorescents or LEDs.
- 3
Reduce screen brightness
Enable night mode on all devices. Consider blue-light blocking glasses.
- 4
Avoid bright bathrooms
Use a dim nightlight for bathroom visits instead of bright overhead lights.
The Evidence
Each claim is linked to its source study. Confidence reflects the study design — systematic reviews and RCTs rank highest.
Evening use of light-emitting eReaders negatively affects sleep, circadian timing, and next-morning alertness
Evening light-emitting screen exposure suppressed melatonin and delayed circadian timing.
Source Context
Primary references behind the protocol summary.
Who Popularized This
Creator references are context only. LiveWell weighs evidence, safety notes, and routine fit separately from who discussed a protocol.
Interactions & Warnings
Review 0 contraindications and 1 interaction note before adding this protocol to a routine.
Interactions
- Works synergistically with morning sunlight exposure
What To Track
These are review prompts for your own routine notes, not expected improvements or medical outcome targets.
Equipment Needed
- Blue light blocking glasses (optional)
- Warm-tone light bulbs (optional)
Routine actions change your saved plan after sign-in. The protocol guidance above remains wellness education, not a personalized recommendation or expected outcome.
Saved-plan controls for this protocol
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