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Effects of Spirulina Supplementation on Mental Health in Healthy Adults

Who can join

Ages 16 to 65 · All sexes · Healthy volunteers welcome

Inclusion Criteria:

* healthy adults
* ages 18-65
* no underlying chronic disease or acute conditions
* no autoimmune conditions
* do not consume alcohol in excess, smoke, use recreational drugs
* does not follow restrictive diets
* will be recruited from the ASU university campus.

Exclusion Criteria:

* not have been clinically diagnosed with depression
* not taking antidepressants, anxiety, or stress medications, or any other medications
* drugs, or supplements that could influence mental capacities
* not pregnant or breastfeeding
* not a competitive athlete

About the study

Spirulina platensis is a form of cyanobacteria, a blue-green algae, and is a superfood most known for being rich in protein, vitamins and minerals, and healthful phytochemicals. Spirulina supports brain health through neuroprotection offered by its antioxidants, anti-inflammatory properties, and hormone regulation.

The aim of this study is to supplement healthy adults from a campus community with 3g of spirulina, daily, for 8 weeks to improve mood and mental acuity in comparison to receiving a placebo.

What is being tested

• Spirulina capsules (other)
• Placebo (other)

Sponsor: Arizona State University · Participants: 30 · Started: Apr 15, 2025

Contact the study team

• Carol Johnston, PhD · Phone: 16024962539

Official record on ClinicalTrials.gov — NCT06936202

Locations in the U.S.

Conditions

• Depression

From ClinicalTrials.gov, data retrieved Sep 30, 2026. Each study sets its own eligibility; the study team decides who can join.