Algae power: could seaweed and spirulina protect your heart?

NCT ID NCT07173062

First seen Nov 01, 2025 · Last updated Jun 06, 2026 · Updated 41 times

Summary

This study tests whether taking spirulina (microalgae) or seaweed (macroalgae) supplements for 20 weeks can improve heart health and gut bacteria in 150 adults aged 50 and older who have heart disease, diabetes, or kidney disease. Participants will be randomly assigned to receive one of the two algae types or a placebo. The researchers will measure changes in blood markers and gut microbes to see if these supplements offer any benefits.

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Contacts and locations

Study contacts

  • Contact

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

  • Contact

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

Locations

  • Unidade Local de Saúde de São João

    RECRUITING

    Porto, 4200-319, Portugal

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

    Contact

Conditions

Explore the condition pages connected to this study.