Effects of test foods on Stool Frequency andskin in Healthy Individuals: a Randomized, Double-blind Study

INTERVENTION: Ingestion of fermental foods Intake period: 8week Ingestion of placebo Intake period: 8week CONDITION: healthy individuals PRIMARY OUTCOME: Bowel movements after ingestion 8 week SECONDARY OUTCOME: intestinal flora, skin moisture, TEWL INCLUSION CRITERIA: 1.Participants aged 20 to64 years 2.Infrequent bowel movements 3 to 5 movements a week 3.Persons sending regular eating habits three meals a day 4.Those who are concerned about drying of the skin as subjective symptoms 5.Person who obtains consent of voluntary participation in examination by document