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Study Protocol: The Efficacy of Mushroom to Reduce Cognitive Decline in At-Risk Middle-aged Adults and Young-olds Living in the Community

Sponsor: National University of Singapore • ClinicalTrials.gov ID: NCT07775833

Registry updated: 2026-09-01

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Description

The investigator's objective is to explore the definitive evidence of mushroom on cognitive functions among at-risk middle-aged and young-olds. The investigator carefully designed a randomized controlled trial (RCT) to assess the role of mushrooms in promoting cognitive functioning among around 600 middle-aged adults and young-olds. Participants were selected based on specific inclusion criteria, such as being community-living adults aged 45-80 years with a family history of dementia or subjective cognitive decline, while consuming mushrooms no more than once a week and having no dementia, along with the exclusion of individuals with neurological or psychiatric disorders and significant sensory or motor impairments. Participants in the intervention group will consume Pleurotus citrinopileatus mushroom powder daily for 24months, with compliance

Interventions

Golden oyster mushroom powder (Dietary supplement)
Participants in the intervention group will consume Pleurotus citrinopileatus mushroom powder daily for 24months, with compliance monitored using electronic diary apps. The powder contains 7.0 mg/g of ergothioneine (dry weight).

Eligibility criteria

Inclusion Criteria: * (1) Community-living adult aged 45 years to 80 years, AND * (2) Family history of Alzheimer's disease or having subjective cognitive (SCD) defined as "self-reported memory problems that have been getting worse over the past year.", AND * (3) Consume mushrooms no more than once a week, AND * (4) No dementia: CDR global score equal to zero. Exclusion Criteria: * (1) Any diagnosis of neurological diseases (e.g., epilepsy, stroke) made by a clinician, OR * (2) Any diagnosis of psychiatric illnesses (e.g., depressive disorders) made by a clinician, OR * (3) Significant sensory or motor impairments, OR * (4) Known allergy to mushrooms or a history of serious food allergies, OR * (5) Participants with a history of gout, OR * (6) Diagnosed with hyperuricemia.

Conditions

Dementia Cognitive Assessment

Locations

Tahir Foundation Building, MD1, Level 12 (12 Science Drive 2) — Singapore, Singapore

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Official Source

Data sourced from ClinicalTrials.gov, a service of the U.S. National Institutes of Health.

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