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Study for effects of Matcha on cognition

An intervention study on effects of matcha green tea consumption on cognitive function in older adults

Status
Active, not recruiting
Phases
Phase 3
Study type
Interventional
Source
JPRN
Registry ID
JPRN-jRCT1041240002
Enrollment
40
Registered
2024-04-03
Start date
2024-04-03
Completion date
Unknown
Last updated
2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Mild cognitive impairment Cognitive decline, Alzheimers disease

Interventions

Matcha 1.5g stick: Drink 1 cup per day, dissolved in water or hot water, before or between meals. Barley tea 0.8g stick: Dissolve in water or hot water and drink 1 cup per day, before or between meal
D013662
Matcha, Barley tea, tea

Sponsors

Ono Kenjiro
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: 1) Individuals who visit Kanazawa University Hospital Neurology Outpatient Department 2) Men and women aged 50 to under 90 on the date of consent 3) Score of Montreal cognitive assessment Japanese version (MoCAJ) is 25 points or less 4) Individuals who can consume matcha or barley tea and be able to record the consumption. 5) Individuals who agree not to make extreme lifestyle changes such as exercise habits or eating habits while participating in the study. 6) Individuals who have obtained sufficient informed consent and written consent of the subject's own free will to participate in the research.

Exclusion criteria

Exclusion criteria: 1) Individuals who have a history of allergies to matcha or barley tea 2) People who have a habit of drinking matcha or barley tea every day 3) Individuals who have the habit of consuming large amounts of tea (any type) every day (approximately 10 cups, 2000ml or more) 4) Individuals who are taking warfarin 5) People with dementia

Design outcomes

Primary

MeasureTime frame
Montreal cognitive assessment Japanese version (MoCA-J) score change: MoCA-J score change from screening 24 weeks after intake

Secondary

MeasureTime frame
Changes in NouKNOW, Minimental state examination Japanese version (MMSE-J), DASC-21 score, cerebral white matter lesions and brain volume (global, regional) on head MRI 24 weeks after intake Amount of change, relationship between changes in intestinal flora from baseline after 24 weeks of intake and cognitive function

Contacts

Public ContactMoeko Shinohara

Kanazawa University Hospital

m-nohara@med.kanazawa-u.ac.jp+81-76-265-2000

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026