Healthy elderly people
Conditions
Interventions
Tea catechins / 2 weeks
Sponsors
University of Shizuoka
Eligibility
Sex/Gender
All
Inclusion criteria
Inclusion criteria: 1)Written informed consent obtained before participation 2)Aged 65 years old or older 3)Able to orally ingest tea catechins 4)Able to prohibit intakes of other tea beverages or catechin rich diets during the study period 5)Able to prohibit new intakes of other dietary supplements influencing immune functions during the study period 6)Able to fill out questionnaires 7)Able to participate blood examinations at the start and end of the intervention
Exclusion criteria
Exclusion criteria: 1)Having green tea allergy 2)Having severe immune deficiency or autoimmune disease 3)Taking drugs influencing immune functions(e.g. steroids, immunosuppressive agents and so on) 4)Taking dietary supplements influencing immune functions since long before the study 5)Subjects diagnosed by a physician inappropriate to participate in the study
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| The change of biological laboratory data concerning immune functions 2 weeks after ingesting tea catechins | — |
Secondary
| Measure | Time frame |
|---|---|
| The change of the number of blood cells 2 weeks after ingesting tea catechins | — |
Countries
Japan
Contacts
Public ContactHiroshi Yamada
University of Shizuoka School of Pharmaceutical Sciences
Outcome results
None listed