Tkachuk (1979) also found similar situation in wheat. Saikusa, Horino and Mori (1994) found that γ-amirobutyric acid (GABA) increased dramatically if brown rice is soaked in 40 degrees in Celsius water for 8 hours to 24 hours. Okada et al. (2000) reported that intake of GABA for 8 consecutive weeks suppressed blood pressure and improved sleeplessness, and autonomic disorder observed during the menopausal or presenile period. More recently, Jeon et al.