Objectives: The present study was examined the effects of dietary supplement containing Kurozu concentrate on Blood Pressure, QOL and Traditional Chinese Medicine (TCM) Constitution. Methods: Forty subjects with slightly high blood pressure were assigned randomly to 2 groups (active group and placebo group). Kurozu-containing foods or the placebo was administered to the subjects daily for 12 weeks. At week 0, 6 and 12, blood samples were collected, physical measurements were taken, and the quality of life (SF-36v2) and TCM constitution were examined. Results: Significant differences on blood pressure and TCM constitution between the groups were observed at week 12. The change of QOL between the groups was observed significantly at week 6. Conclusion: These findings suggest that foods containing Kurozu have hypotensive action and improve effects on constitutional problems. In addition, it was confirmed that foods containing Kurozu are safe to ingest.

Secretory immunoglobulin A (s-IgA) in saliva constitutes the first-line barrier to the entry of pathogens into the body, implying its critical role in mucosal immunity.To examine the effect of a shark liver oil (SLO)-containing diet on salivary s-IgA concentration in healthy male and female adults, 42 subjects were assigned to either placebo or 6 weeks of a 2,400 mg SLO-containing diet (1,500 mg as SLO) and assessed in a randomized, double-blind, placebo-controlled, parallel group trial.Salivary s-IgA concentration significantly increased at week 6 in the SLO group (P = 0.033), but not in the placebo group.Moreover, there was a significant difference between groups in the magnitude of change from baseline to week 6.No intervention-related adverse event or abnormal changes of laboratory test parameters were observed throughout the study period.In conclusion, an SLO-containing diet increases salivary s-IgA in healthy adults.