The Claim
Tunable LED lamps can reduce estimated melatonin suppression from approximately 10% at a cool white color temperature (5700 K) to as low as 0.1% at a warm white color temperature (2100 K), resulting in a dynamic reduction of over 99% in circadian impact when adjusted for evening use.
What the research says
Supports is higher
Support is ahead, but a single strong opposing study can change this.
These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.
Changing your LED light from cool white to warm white in the evening can cut down how much it messes with your sleep hormones by over 99%.
See the scientific wording
Tunable LED lamps can reduce estimated melatonin suppression from approximately 10% at a cool white setting (5700 K) to as low as 0.1% at a warm white setting (2100 K), demonstrating a dynamic range of over 99% reduction in circadian impact when adjusted for evening use.
What the research says
1 studyStudy: Home lighting, blue-light filtering, and their effects on melatonin suppression
The study tested the same kind of light bulbs mentioned in the claim and found they really do reduce sleep-disrupting light by over 99% when switched from cool to warm settings at night.
Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.