Exploratory test on oxidative stress in tears by intake of lutein coffee

Exploratory test on oxidative stress in tears by intake of lutein coffee - Exploratory test on oxidative stress in tears by intake of lutein coffee

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000028220

Enrollment

Registered

2017-07-13

Start date

2017-07-13

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

Healthy Adults

Interventions

Intake of lutein coffee 3 cups a day for 8 consecutive weeks.

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: 1.Persons who received a sufficient explanation of the purpose and contents of the exam, have the capacity to consent, applied with free will with sufficient understanding, and agreed to participate with a written document 2.Healthy Japanese who is 20 years old or more and under 70 years old

Exclusion criteria

Exclusion criteria: 1.Persons who have chronic illness and are receiving medication 2.Persons who are allergic to the test food 3.Persons who have participated in other tests within the first month before the start of the test, or those who intend to participate in another exam after consenting to this exam 4.Persons who are pregnant, planning or hoping to be pregnant during the study period, breastfeeding 5.Persons who were judged as inappropriate for subjects by the principal investigator

Design outcomes

Primary

Measure	Time frame
8-OHdG	—

Secondary

Measure	Time frame
Total protein, Schirmer Test, mucin	—

Countries

Japan

Contacts

Public ContactHirohito Ishikawa

Healthcare Systems Co., Ltd. Research and Development

ishikawa@hc-sys.jp03-6809-2722

Outcome results

None listed

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