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To investigate the hypotensive effect of germinated brown rice, spontaneously hypertensive rats were randomly divided into 4 groups and fed with experimental diets for 6 weeks; control group fed with standard diet, rice group fed with diet containing 50% rice, brown rice group fed with diet containing 50% brown rice and germinated brown rice group fed with diet containing 50% germinated brown rice. Body weight gain and FER (food efficiency ratio) of germinated brown rice group, 86.3 ± 11.1 g and 10.4 ± 1.4%, were significantly lower than those of other groups. Systolic blood pressure of germinated brown rice group after feeding for 6 weeks was 169.2 ± 6.2 mmHg, which was significantly lower than those of other groups and decreased largely compared to that of beginning stage. And blood triglyceride of germinated brown rice group, 138.4 ± 29.5 mg/dL, was significantly lower than those of other groups, but all groups didn’t show significant difference in total and HDL-cholesterol of blood. These results suggested that germinated brown rice had hypotensive effect on spontaneously hypertensive rats.