OBJECTIVE: We investigated dietary consciousness, dietary behavior, dietary environment and students feeling about their own health in Japanese male and female junior high school students, and examined the differences and similarities between the two gender groups to understand what we need to do in dietary education. METHODS: The survey was conducted during the month of October, 2006. Participants: The subjects were 477 junior high school boys (257) and girls (220) (age 12-14 years). Measure:1.We gave subjects a questionnaire of 68 questions asking about their perceptions of their own weight, dietary consciousnesses, dietary behavior, dietary environment, how healthy they believed themselves to be, and their lifestyles.2.Age, height and body weight were measured or supplied by the subjects teachers. Subjects whose weight was greater than or equal to 120% of the baseline degree of obesity as determined by the Ministry of Education were considered to have a tendency toward obesity, and subjects whose weight was less than or equal to 80% of the Ministry of Educations baseline degree of obesity were considered underweight. The TANITA scale was used and BMI was calculated based on the degree of obesity as established by the Japan Society for the Study of Obesity. RESULTS:1.Significant differences were observed between the two gender groups in the disparities between their classification of their own body types and their actual BMI scores (p<0.001). Many girls perceived themselves as overweight even though their weight was at an appropriate level.2.Significant differences were observed between the two groups in the subjective symptoms (p<0.001). Many girls claimed that their health condition was poor.3.Significant differences were observed between the two groups in their cooking skills (p<0.01). Fewer boys are able to cook than girls.4.Some other noteworthy results were obtained between the two groups about the degree of satisfaction with their lives and homes