Effects of Spirulina Supplementation on Mental Health in Healthy Adults

Last updated: August 14, 2025
Sponsor: Arizona State University
Overall Status: Active - Recruiting

Phase

N/A

Condition

Depression

Treatment

Spirulina capsules

Placebo

Clinical Study ID

NCT06936202
STUDY00021993
  • Ages 16-65
  • All Genders
  • Accepts Healthy Volunteers

Study Summary

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.

Eligibility Criteria

Inclusion

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

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

Study Design

Total Participants: 30
Treatment Group(s): 2
Primary Treatment: Spirulina capsules
Phase:
Study Start date:
April 15, 2025
Estimated Completion Date:
May 31, 2026

Study Description

Spirulina is nutrient-dense with vitamins and minerals which provide antioxidants and anti-inflammatory mechanisms to help reduce oxidative stress and ROS activity. Preclinical studies have indicated Spirulina can reduce inflammatory cytokines, such as IL-1β, and reverse stress responses and oxidative damage in BDNF, nuclear factor erythroid 2-related factor (NRF2), and ultimately the phosphorylation of protein-kinase B (AKT), which promotes cell growth. In addition to these benefits, fatty acids, gamma-linolenic acid (GLA) and glycolipids, support gut health and the immune system. In combination, all these nutrients help increase neuroprotection and brain health.

It is evident that Spirulina supports brain health through neuroprotection, antioxidants, anti-inflammatory properties, and hormone regulation. Research supports Spirulina reversing neurodegenerative diseases due to several of these beneficial properties. There have been many studies that utilize Spirulina to improve cognitive function in Alzheimer's Disease, Parkinson's Disease, ulcerative colitis, IBD, fibromyalgia and even in TBI and Ischemic stroke.

Although many of these diseases have depressive symptoms, few of these studies have evaluated the impact of Spirulina on mood. Furthermore, no studies have been conducted relating depression and the cyanobacteria. It is possible that Spirulina supplements can be used to reduce feelings of hopelessness and lack of energy, by providing additional vitamins, minerals, amino acids, and fatty acids, on a daily basis. This study aims to compare spirulina and its improvement on mood, in health college students, by daily supplementation of 3g of Spirulina over a span of 8 weeks.

Connect with a study center

  • 850 PBC

    Phoenix, Arizona 85004
    United States

    Active - Recruiting

Map preview placeholder

Not the study for you?

Let us help you find the best match. Sign up as a volunteer and receive email notifications when clinical trials are posted in the medical category of interest to you.