The CHIRAN TEA/Folic acid supplement project

Health promotion measures with a dietary supplement containing catechin and folic acid among Japanese adults: The CHIRAN TEA/Folic acid supplement project. - The CHIRAN TEA/Folic acid supplement project

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000038301

Enrollment

1000

Registered

2019-10-15

Start date

2019-08-10

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

Health promotion

Interventions

Administration of dietary supplements containing folic acid (400 microgram) and catechin (150 mg) for one year.

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: - Age: more than or equal to 65 years at the time of providing informed consent - Individuals who have never experienced psychological and critical diseases. - Individuals who have the ability to provide written informed consent.

Exclusion criteria

Exclusion criteria: - Subjects who have an inappropriate clinical history for efficacy and safety assessment in the study (such as drug abuse, alcoholism, and the disease of heart, liver, kidney, lungs, eye, blood etc) and who is taking any drugs. - Subjects judged to be inappropriate for the study by the investigator.

Design outcomes

Primary

Measure	Time frame
Health related QOL	—

Secondary

Measure	Time frame
The compliance of dietary supplements. The prevalence of new-onset dementia, cerebral infarction and other diseases associated with high homocysteine and/or low folate. Changes in medical costs. The changes in plasma folic acid and homocysteine.	—

Countries

Japan

Contacts

Public ContactSeika Kamohara

DHC Corporation Division of Research Adviser

kamohara-seika@umin.ac.jp03-6845-0166

Outcome results

None listed

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