healthy adult men and women
Conditions
Interventions
None listed
Sponsors
Japan Clinical Trial Association
Eligibility
Sex/Gender
All
Inclusion criteria
Inclusion criteria: Participants The study targeted healthy adult men and women as participants. Given the absence of standardized clinical criteria to distinguish between healthy and diseased individuals based on skin elasticity, no numerical thresholds were applied to define skin health. Instead, individuals were excluded from the healthy cohort if they had received a medical diagnosis, undergone dermatological procedures beyond routine skincare, or used pharmaceutical products. Furthermore, individuals with any diagnosed medical conditions, minors, pregnant women, and lactating women were also excluded from participation. Intervention The intervention consisted of the oral intake of a food product containing gamma-aminobutyric acid (GABA). Data were collected at three time points: 4 weeks, 8 weeks, and 12 weeks after the start of intake. Participants were categorized into three groups based on their daily GABA intake: less than 30 mg, 30-99 mg, and 100 mg or more. Products with unclear GABA content were excluded from the analysis. Control The control condition was defined as the oral intake of food products that do not contain gamma-aminobutyric acid (GABA). In principle, products containing GABA or other ingredients known to affect the study outcomes were excluded. However, studies involving non-intake or products containing only trace amounts of such ingredients-judged unlikely to influence the outcomes-were permitted to be included in the control group
Exclusion criteria
Exclusion criteria: Exclude trials that do not meet the selection criteria, such as those including individuals with diseases.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Skin Elasticity | — |
Secondary
| Measure | Time frame |
|---|---|
| Skin Hydration | — |
Countries
Japan
Contacts
Public ContactTakeshi Kaneko
Japan Clinical Trial Association N/A
Outcome results
None listed