Light therapy glasses deliver specific wavelengths of light (typically blue-green) to retinal ganglion cells, signaling the body's master clock, the suprachiasmatic nucleus (SCN). By mimicking morning sunlight, they suppress melatonin production and anchor the circadian rhythm, which is fundamental for regulating sleep-wake cycles, hormone release, and metabolic function, all critical for long-term healthspan.
Verdict
A high-impact, safe tool for optimizing foundational circadian rhythm.
HEALTHSPAN IMPACT
High Value
RISK LEVEL
Very Low
EVIDENCE GRADE
A
MONTHLY COST
$75 - $250
Protocol
- Wear for 20-30 minutes immediately upon waking to suppress melatonin and entrain circadian rhythm.
- Use for 30 minutes daily during winter months to mitigate seasonal affective disorder (SAD).
Flags
- Use in the evening can severely disrupt sleep onset and quality.
- Individuals with bipolar disorder should use with caution due to potential mania induction.
- Consult an ophthalmologist if you have pre-existing retinal conditions.
- May cause mild headache, eye strain, or nausea upon initial use.