The effect of Lactobacillus on mood states in summer: a randomized, double-blind, placebo-controlled study.

The effect of Lactobacillus on mood states in summer: a randomized, double-blind, placebo-controlled study. - The effect of Lactobacillus on mood states in summer

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000036941

Enrollment

300

Registered

2020-01-31

Start date

2019-06-17

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

Ingestion of Lactobacillus for 13 weeks Ingestion of placebo for 13 weeks

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: Subjects between 20 to 64 years old

Exclusion criteria

Exclusion criteria: 1) Subjects with regular use of medicine due to chronic diseases 2) Subjects who consume supplements or food habitually containing Lactobacillus, Bifidobacterium, GABA, theanine and caffeine, etc. 3) Subjects with milk allergy 4) Subjects who have a history of serious disorders in liver, kidney, heart, lung, gastro-intestine, blood, endocrine system, or metabolic system etc. 5) Subjects in pregnancy or breast-feeding 6) Subjects who are judged inappropriate to this trial by the investigator

Design outcomes

Primary

Measure	Time frame
Profile of Mood States Second Edition-adult Short	—

Secondary

Measure	Time frame
Visual Analogue Scale Chalder Fatigue Scale Simplified Nutritional Appetite	—

Countries

Japan

Contacts

Public ContactMasahiko Kurokawa

Kyushu University of Health and Welfare Department of Biochemistry, Graduate School of Clinical Pharmacy

b2mk@phoenix.ac.jp0982-23-5574

Outcome results

None listed

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