Nattokinase: a natural sleep and heart booster?
NCT ID NCT07229521
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study tests whether taking nattokinase, a supplement made from fermented soybeans, can improve sleep quality, thinking skills, and heart health in people at risk for metabolic syndrome. About 80 adults will take either the supplement or a placebo for 12 weeks, then switch after a break. Researchers will measure sleep, mood, memory, and blood markers to see if the supplement helps.
What this could mean
Our plain-language read of the trial. This is informational only — not medical advice or a prediction.
Active substance
nattokinase (a dietary supplement from fermented soybeans)
What this could lead to
If it works, this could point toward a simple supplement to improve sleep, thinking, and heart health in people with metabolic syndrome risk.
What could go wrong
This is a small, early-stage crossover trial with only 80 participants. Results may not apply to everyone, and the supplement may not work better than a placebo.
Disclaimer
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This is a summary of
the original study
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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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Study contacts
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Contact
Phone: •••-•••-•••• Email: •••••@•••••
Locations
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Taipei Medical University
RECRUITINGTaipei, 110, Taiwan
Contact Phone: •••-•••-•••• Email: •••••@•••••