Improvement in lesions of the stomach induced by H. pylori infection and/or restraint stress by the leaf extract of Wasabia japonica In the present study, administration of wasabi extract did not affect food intake, water intake, or body weight
(data not shown). The effects of wasabi extract on stomach weight and CFU are shown in Table 2. After
administration of wasabi extract for 10 d, the average stomach weight markedly increased, by 2.0–fold, in
group H1 (H. pylori infection) as compared with group 1 (no infection).