Effects of hydrogen jelly on depressive symptoms and cognitive function

Study on the effects of oral intake of hydrogen-containing jelly on depressive symptoms and cognitive function

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-jRCTs061230041

Enrollment

Registered

2023-08-02

Start date

2023-08-05

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, Depression in the elderly

Interventions

Hydrogen-containing jelly group: Hydrogen-containing jelly is swallowed without chewing three times a day (morning, noon, night) for 28 consecutive days. Hydrogen-free jelly (placebo) group: Hydrogen-

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: Persons over 70 years old

Exclusion criteria

Exclusion criteria: 1. Persons who drink hydrogen water regularly 2. Persons who have gelatin allergy 3. Persons who have difficulty in swallowing

Design outcomes

Primary

Measure	Time frame
Self-administered questionnaire on depressive symptoms (Beck Depression Inventory: BDI, Patient Health Questionnaire-9: PHQ-9), cognitive function test by interview (Montreal Cognitive Assessment: MoCA-J)	—

Secondary

Measure	Time frame
Stress assessment by voice reading (Mind Monitoring System: MIMOSIS)	—

Contacts

Public ContactMaruyama Takayuki

Okayama University Hospital

t-maru@md.okayama-u.ac.jp+81-86-235-6712

Outcome results

None listed

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