The Japan Collaborative Cohort (JACC) Study was established in 1988-1990 and consisted of 46,465 men and 64,327 women observed until the end of 2003. A self-administered food frequency questionnaire was used as a baseline survey, and associations of dietary habits with the risk of ovarian cancer death were evaluated, taking into consideration age, menstrual and reproductive, anthropometric, and lifestyle factors. During the observation period, 77 women died of ovarian cancer. Hazard ratios for dietary factors were calculated by Cox's proportional hazards model. Being adjusted only for age, high intakes of dried or salted fish and Chinese cabbage were positively associated with the risk of ovarian cancer death, and the risk increased dose-dependently. In contrast, intake of soybean curd (tofu) was inversely associated with the risk. After being adjusted for age and potential confounding factors, the results regarding the intakes of dried or salted fish and Chinese cabbage did not change. However, the significance relating to the intake of soybean curd (tofu) was attenuated. From the results of this cohort study, it was suggested that high intakes of dried or salted fish and Chinese cabbage were potential risk factors of ovarian cancer death. In contrast, however, a high intake of soy bean curd (tofu) might have preventive effects against the risk.

Background: Diabetes mellitus (DM) is reported as being a risk factor associated with kidney cancer in Western countries. The incidence of both kidney cancer and DM is lower in Japan than the other developed countries, albeit on the rise. Methods: We evaluated the risk factors for kidney cancer mortality using the database of the Japan Collaborative Cohort Study for Evaluation of Cancer Risk (JACC) study. The analytic cohort included 46 462 males and 64 326 females aged 40-79 years old. The Cox proportional hazards model was used to determine age-and sex-adjusted relative risk and its 95% confidence intervals. Results: DM showed an increased , age-and sex-adjusted hazard ratio for kidney cancer mortality, but it failed to achieve statistical significance after controlling for other factors. Conclusion:The present study showed that DM increased the risk of kidney cancer death among the Japanese population. However, further studies may be needed to confirm the findings in the present study because DM failed to remain as a significant risk factor after controlling for other factors because of the small number of kidney cancer deaths in the present study.

CC screening in Japan may reduce CC mortality significantly for women aged 30-79 years. However, further studies with more CC deaths and increased statistical power are needed to validate the findings.

Attempts were taken to reduce tiger-human conflict in and around the Sundarbans, Bangladesh, from August 2005 to January 2007 using domestic dogs. Keeping one tethered dog with each group of people working in the mangrove forest was found to be effective in reducing the risk of being attacked by tigers Panthera tigris. The dogs warned people of the presence of tiger. The responses of 40 dogs were recorded and verified and it was found that the dogs could detect the presence of any nearby sizeable wild animal with a success rate of 92% but they could not always distinguish tiger from wild boar Sus scrofa or spotted deer Axis axis. Success rate in distinguishing the tiger was 62%. The dogs were particularly useful for honey gatherers because when they smoke the honeycomb visibility becomes poor and they become more vulnerable to attack by tigers.