Can bright light beat COVID fatigue? tiny trial hints at hope
NCT ID NCT05677932
First seen Jun 24, 2026 · Last updated Jun 27, 2026 · Updated 1 time
Summary
This small study tested whether sitting under a bright light for 30 minutes a day for two weeks could help people with long-lasting fatigue after COVID-19. Twelve adults who had been tired for months after their infection took part. The goal was to see if the light therapy could reduce their tiredness, sleep problems, and low mood.
What this could mean
Our plain-language read of the trial. This is informational only — not medical advice or a prediction.
Active substance
bright light therapy (device)
What this could lead to
If it works, this could point toward a simple, non-drug way to reduce fatigue after COVID-19.
What could go wrong
This is a very small, early trial with only 12 participants. The results may not apply to everyone, and the effect may be small or due to chance.
Disclaimer
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This is a summary of
the original study
.
Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
This is a summary of the original study . Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
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Locations
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The Chinese University of Hong Kong
Hong Kong, Hong Kong