Soy enzyme nattokinase tested for better sleep and sharper mind

NCT ID NCT07229521

First seen Nov 17, 2025 · Last updated May 14, 2026 · Updated 19 times

Summary

This study looks at whether taking nattokinase, a natural enzyme from fermented soy, can help people with early signs of metabolic syndrome and poor sleep. About 80 adults will take either nattokinase or a placebo for 12 weeks, then switch. Researchers will check sleep quality, thinking skills, blood pressure, and gut bacteria to see if the supplement makes a difference.

Disclaimer Read more

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.

Get updates

Get notified about this study

Sign up to get updates when this study changes or when new studies for METABOLIC SYNDROME are added.

Our safety recommendation!

By submitting, you agree to our Terms of use

Contacts and locations

Study contacts

  • Contact

    Phone: •••-•••-•••• Email: •••••@•••••

Locations

  • Taipei Medical University

    RECRUITING

    Taipei, 110, Taiwan

    Contact Phone: •••-•••-•••• Email: •••••@•••••

Conditions

Explore the condition pages connected to this study.