RESUMO
It is not easy for nurses to estimate a patient's degree of shame, as the sense of shame depends on each person's personality, but nurses are requested to evaluate it as correctly as possible and to reduce the patient's mental load. We presume that most of the sense of shame is generated by body defects or disadvantages recognized by the patient. In this study, we tried to measure the degree of shame and to improve the basic nursing curriculum, depending on students' school year, under the assumption of what cases the nurses would frequently meet in a hospital. We prepared 13 figures that show common cases in hospitals. In these figures: 1) 6 figures show cases in which a nurse touched a patient's body; 2) 3 figures show common daily life; and 3) 4 figures show cases in which there are other people around the patient. A questionnaire was given to the first and second year students in A Nursing University, and we allocated scores of 1 to 10: 1 is "no-shame", and 10 is "very much shame". The students answered that patients must feel shame when: 1) they take off their clothes, 2) they show their disability to another person even without taking their clothes off, and 3) having people other than medical staff around them. In the results, as 2) appeared more strongly in the second year students than in the first, we thought that the second year students could surmise a patient's position in a hospital through the effect of the nursing education.
Assuntos
Atitude do Pessoal de Saúde , Educação em Enfermagem/métodos , Pacientes/psicologia , Vergonha , Estudantes de Enfermagem/psicologia , Currículo , Feminino , Humanos , Masculino , Personalidade , Melhoria de Qualidade , Inquéritos e QuestionáriosRESUMO
Nursing department students are expected to correctly grasp the entire concept of nursing through their education. The authors created a movie of a Nightingale ward (virtual ward, hereafter) with an architectural computer design software for education. The students' reaction to the virtual ward was categorized into three viewpoints: that of nurses, of patients, and of nurses and patients in common. Most of the reactions in each viewpoint were: "easy to observe patients" in the nurses' viewpoint; "no privacy" in the patients' viewpoint; and "wide room" in the common viewpoint, respectively. These reactions show the effectiveness of using a virtual ward in nursing education. Because these reactions are characteristics of a Nightingale ward, and even students, who have generally less experiences, recognized these characteristics from the both viewpoints of nurses and patients.
Assuntos
Educação em Enfermagem , Educação em Enfermagem/ética , Feminino , Humanos , Masculino , Estudantes de Enfermagem , Inquéritos e QuestionáriosRESUMO
Loeys-Dietz Syndrome (LDS) is an autosomal dominant aortic aneurysm syndrome with multisystem involvement, caused by heterozygous mutations of transforming growth factor beta receptor type 1 (TGFBR1) or type 2 (TGFBR2) genes. We report on a neonate with the disorder caused by a known TGFBR2 mutation, who developed neonatal-onset progressive dilation of the aortic valve and aneurysms of the aortic root and main pulmonary artery (PA) associated with a large left-to-right shunt via a ventricular septal defect (VSD) and an atrial septal defect. He also had skeletal features (flexion contractures of the fingers, talipes equinovarus, a cleft palate, and joint laxity), mild facial dysmorphisms, and developmental delay. The dilation and aneurysms progressed after PA banding at age 12 days; and the patient received an intracardiac repair of the defects and PA plasty at age 42 days, followed by no further progression of the dilation and the aneurysms. Neonates with generalized hypotonia, a cleft palate, inguinal herniae, musculoskeletal features such as camptodactyly and talipes equinovarus, and a cardiac murmur should be suspected to have LDS, and extensive cardiovascular evaluation and testing of TGFBR1 and TGFBR2 are recommended. LDS patients with cardiac defects that lead to a large left-to-right shunt and congestive heart failure such as VSD should be considered for intracardiac repair even in early infancy.
Assuntos
Aneurisma Aórtico/diagnóstico , Aneurisma Aórtico/genética , Síndrome de Loeys-Dietz/diagnóstico , Síndrome de Loeys-Dietz/genética , Artéria Pulmonar/patologia , Adulto , Aneurisma Aórtico/cirurgia , Valva Aórtica/patologia , Análise Mutacional de DNA , Éxons , Insuficiência Cardíaca/genética , Insuficiência Cardíaca/cirurgia , Humanos , Lactente , Síndrome de Loeys-Dietz/cirurgia , Angiografia por Ressonância Magnética/métodos , Masculino , Proteínas Serina-Treonina Quinases/genética , Artéria Pulmonar/cirurgia , Receptor do Fator de Crescimento Transformador beta Tipo II , Receptores de Fatores de Crescimento Transformadores beta/genética , Fatores de Tempo , Resultado do TratamentoRESUMO
BACKGROUND/AIMS: Both the incidence of diabetes mellitus (DM) and mortality from Hepatocellular carcinoma (HCC) are increasing in Japan. As the association of overall cancer and HCC with impaired glucose tolerance (IGT) has been studied rarely in the world including Japan, this study assessed their associations using cohort data of Hokkaido, Japan. METHODOLOGY: After getting ethical consent, this study included 908 men and 1,081 women aged 30-77 years during 1977-78 and collected detailed information using the baseline survey. The subjects were followed until 2002 and deaths were recorded using ICD-9. Classifying them into three groups of diabetes status namely DM, IGT, and normal, the relative risk (RR) of mortality was estimated by diabetes status using multivariate Cox model. RESULTS: This study revealed no association between overall cancer and diabetes status. However, the RR of mortality from HCC was about 11 times (HR= 10.8, 95%CI: 1.3-92.5) higher in IGT compared with normal group. DM group also showed higher risk of mortality than normal group. CONCLUSIONS: HCC mortality was significantly high among IGT group. However, as the results of the study were based on small data, further studies with large cohort are needed to address the association of IGT with overall cancer and HCC mortality in Japan.
Assuntos
Carcinoma Hepatocelular/epidemiologia , Intolerância à Glucose/epidemiologia , Neoplasias Hepáticas/epidemiologia , Adulto , Idoso , Carcinoma Hepatocelular/mortalidade , Carcinoma Hepatocelular/fisiopatologia , Diabetes Mellitus/epidemiologia , Feminino , Humanos , Japão/epidemiologia , Neoplasias Hepáticas/mortalidade , Neoplasias Hepáticas/fisiopatologia , Masculino , Pessoa de Meia-Idade , Neoplasias/mortalidadeRESUMO
PURPOSE: Isoflavones may play a role in the prevention of hormone-related cancers. Equol is an isoflavone metabolized from daidzein in the presence of certain intestinal bacteria. Slackia sp. strain NATTS, a newly identified equol-producing bacterium, was recently isolated from human feces in Japan. We investigated the association of serum levels and dietary intake of isoflavones and Slackia sp. strain NATTS with the risk of prostate cancer in a case-control study among Japanese men. METHODS: Fifty-six patients with newly diagnosed prostate cancer and 56 hospital controls were enrolled in this study. Isoflavones were assessed by measurement of serum levels and administration of a food frequency questionnaire. Slackia sp. strain NATTS in feces was also measured. The odds ratios (ORs) and 95 % confidence intervals (CIs) for prostate cancer were then determined using a logistic regression model. RESULTS: The adjusted ORs for prostate cancer in comparison with the highest to lowest categories were 0.06 (95 % CI 0.02-0.24) for serum genistein, 0.18 (95 % CI 0.06-0.52) for daidzein, 0.16 (95 % CI 0.06-0.46) for glycitein, 0.52 (95 % CI 0.22-1.22) for equol, 0.86 (95 % CI 0.30-2.48) for dietary genistein, and 0.80 (95 % CI 0.28-2.28) for dietary daidzein. The adjusted OR for prostate cancer in comparison with values above versus below the median was 0.95 (95 % CI 0.42-2.16) for Slackia sp. strain NATTS. CONCLUSION: Our study findings suggest that high serum levels of genistein, daidzein, and glycitein are significantly associated with a decreased risk of prostate cancer among Japanese men.
Assuntos
Actinobacteria/isolamento & purificação , Dieta , Isoflavonas/sangue , Neoplasias da Próstata/sangue , Idoso , Estudos de Casos e Controles , Equol/sangue , Fezes/microbiologia , Genisteína/sangue , Humanos , Japão/epidemiologia , Masculino , Pessoa de Meia-Idade , Razão de Chances , Neoplasias da Próstata/epidemiologia , Neoplasias da Próstata/microbiologia , Inquéritos e QuestionáriosRESUMO
Dietary factors are thought to be closely associated with the development of human cancers and hence numerous studies in this area have already been conducted in the United States and other Western countries. Comparatively few prospective studies have been published in Japan, especially for Hokkaido people. The present investigation was therefore performed to assess links between four leading cancers and some of the Japanese common dietary factors through a cohort study (1984-2002) in Hokkaido by analyzing 1,524 men and 1,634 women separately aged 40 and over. Adjusted Cox proportional hazard regression was used to calculate the relative risk (RR) for each dietary factor. For men, two dietary factors, miso soup (RR=0.2, 95% confidence interval (95%CI)=0.1-0.8) and pickled vegetables (RR=0.2, 95%CI=0.1-0.8) were associated with lower risk for stomach and colorectal cancer respectively. For women, three factors, namely salty confectionary (RR=3.5, 95%CI=1.1-10.9), black tea (RR=3.8, 95%CI=1.1-13.6), and carbonated drink/juice (RR=3.9, 95% CI=1.4-11.1) appeared related to an elevated risk of stomach cancer. However, further analysis simultaneously with all other adjusted factors indicated only carbonated drink/juice (RR=3.1, 95%CI=1.1-8.9) to present a significant risk factor for stomach cancer. One factor, namely wild edible plants (RR=3.3, 95%CI=1.1-9.8), increased the risk for colorectal cancer in women. None of the dietary components were significantly associated with lung or pancreatic cancers. This study also indicated a wide variation in the impact of dietary factors by sex and cancer site, in line with earlier work, pointing to a necessity for careful interpretation. Further epidemiological investigations by sex with more study subjects and confounding factors will be useful for determining the contribution of individual dietary factors to development of human cancers in Hokkaido, Japan.
Assuntos
Neoplasias Colorretais/etiologia , Neoplasias Colorretais/mortalidade , Dieta , Neoplasias Pulmonares/epidemiologia , Neoplasias Pulmonares/etiologia , Neoplasias Pancreáticas/etiologia , Neoplasias Pancreáticas/mortalidade , Neoplasias Gástricas/epidemiologia , Neoplasias Gástricas/etiologia , Adulto , Fatores Etários , Idoso , Idoso de 80 Anos ou mais , Feminino , Humanos , Japão/epidemiologia , Japão/etnologia , Masculino , Pessoa de Meia-Idade , Estudos Prospectivos , Análise de Regressão , Fatores de Risco , Fatores SexuaisRESUMO
BACKGROUND: Our previous case-control study revealed that Japanese living in Japan and Koreans living in Korea can be divided into equol producers who have an ability to metabolize daidzein to equol and non-producers, and that the incidence of prostate cancer is higher in the latter group. In the present study, we examined relationships between type of food intake and the capacity for equol production in Japanese subjects. METHODS: The subjects were the individuals analyzed for the ability to produce equol in our previous study and newly registered cases. From December 2000 to December 2002, 276 hospitalized patients were interviewed face-to-face and blood samples were collected before breakfast. These included 122 patients with prostate cancer and 154 age-matched controls. RESULTS: The frequency of equol producers (0.5 ng/ml or more) among cases and controls was 29% and 45%, respectively (p = 0.004). The consumption of soybeans and green tea were significantly higher in equol producers than in the non-producers (p<0.05). By contrast, the consumption of selenium and fiber was significantly lower in equol producers (p<0.05). CONCLUSIONS: Our results suggest that higher consumption of soybean and green tea are strongly related to the establishment of a capacity for equol production.
Assuntos
Isoflavonas/biossíntese , Neoplasias da Próstata/metabolismo , Chá , Idoso , Dieta , Equol , Estrogênios não Esteroides/metabolismo , Humanos , Isoflavonas/metabolismo , Masculino , Glycine maxRESUMO
Morphine is the dominant medication to control cancer pain. Morphine consumption has been increasing each year in many countries including Japan based on the understanding of the WHO report on the treatment of cancer pain. To evaluate the recent and current state of palliative medication for cancer patients in Toyama Medical and Pharmaceutical University (TMPU) Hospital, the amount of and trend in the use of morphine preparations from 1992 to 2001 were investigated. The amount used increased every year to 3.9-fold of that in 1992 at the end of this survey. In particular, the consumption of morphine sulfate sustained-release tablets and morphine hydrochloride injection increased markedly, because both total dose in individual patients and the number of patients treated with high-dose morphine increased. The distribution of the maximum daily dose in TMPU Hospital was similar to that in a specialist hospital in oncology. In conclusion, morphine consumption will increase to achieve better palliative care and to improve quality of life in cancer patients, and therefore appropriate use and regulation of narcotic preparations are necessary.
Assuntos
Uso de Medicamentos/estatística & dados numéricos , Uso de Medicamentos/tendências , Hospitais Universitários/estatística & dados numéricos , Morfina , Formas de Dosagem , Departamentos Hospitalares/estatística & dados numéricos , Humanos , Japão/epidemiologia , Morfina/administração & dosagem , Cuidados Paliativos , Qualidade de Vida , Fatores de Tempo , Organização Mundial da SaúdeRESUMO
BACKGROUND: Isoflavones, which are included in soybeans, have been suggested to protect against prostate cancer. Equol, one of isoflavones, is an intestinally derived bacterial metabolite of daidzein. A newly identified equol-producing bacterium, Slackia sp. strain NATTS, with a high equol-producing activity was isolated from human feces in Japanese adults. Counts of Slackia sp. strain NATTS in intestinal flora have not been assessed with regard to prostate cancer risk. In this study, we investigated the association of serum isoflavones and counts of Slackia sp. strain NATTS with prostate cancer risk in a case-control study. MATERIALS AND METHODS: Concentrations of isoflavones and counts of Slackia sp. strain NATTS in feces were measured from 44 patients with prostate cancer and 28 hospital controls. The risk of prostate cancer was evaluated in terms of odds ratios (ORs) and 95% confidence intervals (CIs) by the logistic regression analysis. RESULTS: The detection proportions of Slackia sp. strain NATTS in cases and controls were 34.1% and 25.0%, respectively. Counts of Slackia sp. strain NATTS were significantly correlated with serum concentrations of equol both in cases and controls (Spearman correlation coefficients, rs=0.639 and rs=0.572, p<0.01, respectively). Serum concentrations of genistein, daidzein, glycitein, and equol were not significantly associated with risk of prostate cancer. CONCLUSIONS: This study found that counts of Slackia sp. strain NATTS correlated with serum concentrations of equol both in prostate cancer cases and controls, but serum isoflavone concentrations were not associated with risk of prostate cancer in our patients.
Assuntos
Actinobacteria/metabolismo , Equol/sangue , Mucosa Intestinal/metabolismo , Intestinos/microbiologia , Neoplasias da Próstata/sangue , Actinobacteria/crescimento & desenvolvimento , Adulto , Idoso , Estudos de Casos e Controles , Fezes/microbiologia , Seguimentos , Humanos , Isoflavonas/metabolismo , Masculino , Pessoa de Meia-Idade , Prognóstico , Neoplasias da Próstata/microbiologia , Neoplasias da Próstata/patologiaRESUMO
Breast cancer is one of the most frequently diagnosed cancers and the leading cause of cancer death among women. Soy isoflavones have been widely studied and among all isoflavones equol has been gaining interest with regard to its relationship with breast cancer risk. Obesity has been revealed as one of the breast cancer risk factors, known to be associated with high levels of circulating insulin and decreased levels of adiponectin. Hence there have been many studies investigating relationships between insulin and adiponectin levels and breast cancer risk. Additionally recent findings have suggested that insulin and adiponectin themselves may have influence on breast cancer development, independent of obesity. In the present review, we discuss the relationships between breast cancer risk and equol, insulin and adiponectin levels, which are three important factors in our ongoing hospital-based case-control study. Herein these factors are reviewed not only from the clinical viewpoint but also from possible chemical and biological points of view which may explain clinical observations.
Assuntos
Adiponectina/efeitos adversos , Neoplasias da Mama/etiologia , Equol/efeitos adversos , Hipoglicemiantes/efeitos adversos , Insulina/efeitos adversos , Fitoestrógenos/efeitos adversos , Neoplasias da Mama/tratamento farmacológico , Neoplasias da Mama/metabolismo , Estudos de Casos e Controles , Feminino , Humanos , Obesidade/complicações , Fatores de RiscoRESUMO
BACKGROUND: The age-adjusted incidence rate of prostate cancer (PCa) has been reported to be lower among Asians than Western populations. A traditional Japanese meal, high in soybean products or isoflavones, may be associated with a decreased risk of PCa. Equol, which is converted from daidzein by human intestinal flora, is biologically more active than any other isoflavone aglycone. MATERIALS AND METHODS: We reviewed not only recent epidemiological studies on association of isoflavones with PCa risk, but also recent research on human intestinal bacteria responsible for converting daidzein into equol. Studies were systematically searched from the database published within the last 5 years of from 2008-2012. RESULTS: Five out of 6 articles showed significant association of isoflavones with a decreased risk of PCa, and two of them consistently showed that equol-producers carry a significantly reduced risk of PCa. Furthermore, 5 human intestinal bacteria that can convert daidzein into equol were identified in the last 5 years. CONCLUSIONS: If equol can reduce risk of PCa, a possible strategy for reducing the risk of PCa may be to increase the proportion of equol-producers by changing the intestinal flora to carrying an equol-producing bacterium with dietary alteration or probiotic technology.
Assuntos
Bactérias/metabolismo , Equol/metabolismo , Trato Gastrointestinal/microbiologia , Isoflavonas/metabolismo , Neoplasias da Próstata/epidemiologia , Fezes/microbiologia , Alimentos , Humanos , Masculino , MetabolomaRESUMO
The increase in the incidence rate of prostate cancer may be associated with changes in lifestyle in Japanese men. Accordingly, we conducted a case-control study to assess risk factors. A total of 117 (82.3%) of the 142 prostate cancer patients asked filled out the self-administrated questionnaires which included items about their lifestyle habits over the period of one or two years before their diagnosis. Four controls per case, namely 468, were randomly selected from resident registries with age and address matched with each case, and 318 controls (69.5%) filled out the same questionnaire as the cases. Data for 277 controls were used for the analysis, excluding 41 subjects with a history of previous cancer. The conditional logistic regression model was utilized for analyzing the individually age and address-matched data, and odds ratios (ORs) and their 95% confidence intervals (95%CIs) were calculated for potential risk factors. Higher body mass index at 20 years of age was marginally significantly associated with a decreased risk (P for trend=0.051), and larger weight gain in adult age was significantly associated with an increased risk (P for trend=0.041). History of prostate cancer in fathers or brothers was significantly associated with an increased risk (OR=9.71, 95%CI 3.59, 26.27), and history of breast cancer in mothers or sisters was also significantly associated with an increased risk (OR=2.70, 95%CI 1.12, 6.49). The recent increase in the incidence rate of prostate cancer may possibly be brought about by an increased proportion of Japanese men with large weight gain in adult age.
Assuntos
Povo Asiático/genética , Neoplasias da Mama/genética , Saúde da Família , Predisposição Genética para Doença , Neoplasias da Próstata/etiologia , Aumento de Peso/genética , Adulto , Idoso , Idoso de 80 Anos ou mais , Estudos de Casos e Controles , Feminino , Seguimentos , Humanos , Incidência , Masculino , Pessoa de Meia-Idade , Prognóstico , Fatores de Risco , Inquéritos e Questionários , Taxa de SobrevidaRESUMO
The traditional Japanese diet has been suggested by some researchers to be associated with a decreased risk of prostate cancer (PCa). In this paper, we assumed the following three characteristics of the traditional Japanese diet high in soybean products, high in fish, and low in red meat. Isoflavones, polyunsaturated long chain (n - 3) fatty acids, and saturated fatty acids were thought to be micronutrients in biological etiology relevant to soybean products, fish, and red meat, respectively. Analytical epidemiological studies on the risk of PCa were identified using the MEDLINE database from 1998 to 2007. Some published studies showed a negative association of soybean products and isoflavones to PCa risk, an inverse association for fish or polyunsaturated long chain (n - 3) fatty acids such as eicosapentaenic acid (EPA) and docosahexaenoic acid (DHA) with PCa risk, and a positive association of red meat or saturated fatty acids with PCa risk, respectively. In conclusion, although it is possible that the traditional Japanese diet may reduce the risk of PCa through a combination of characteristics such as being high in soybean products, high in fish, and low in red meat, further well-designed epidemiological studies such as nested case-control studies with nutritional analyses of blood samples are needed to confirm this association.
Assuntos
Dieta , Neoplasias da Próstata/prevenção & controle , Animais , Peixes , Humanos , Japão , Masculino , Carne , Glycine maxRESUMO
We examined associations between nutritional and other lifestyle factors and the prevalence of prostate cancer in a case-control study of Japanese men. Two hundred patients and 200 age-matched controls (+/-5 y) were selected from 3 geographic areas of Japan. BMI, physical activity, occupation, family history of prostate cancer, and medical history were not associated with prostate cancer risk. Isoflavones and their aglycones (genistein and daidzein) were significantly associated with decreased risk. The odds ratio for the highest category (> or = 89.9 mg/d) compared with the lowest category (<30.5 mg/d) of isoflavone intake was 0.42 (95% CI = 0.24-0.72) and the linear trend was significant (P < 0.01). PUFA, (n-6) fatty acids, and magnesium were significantly associated with decreased risk but not after adjustment for isoflavone intake. Isoflavone intake was correlated with the intake of PUFA (r = 0.68, P < 0.001), (n-6) fatty acids (r = 0.69, P < 0.001), and magnesium (r = 0.56, P < 0.001), because soy products contain high levels of these nutrients. On the other hand, isoflavone significantly decreased the risk of prostate cancer regardless of adjustment by PUFA, (n-6) fatty acids or magnesium. In conclusion, our findings indicate that isoflavones might be an effective dietary protective factor against prostate cancer in Japanese men.
Assuntos
Dieta , Isoflavonas/farmacologia , Neoplasias da Próstata/prevenção & controle , Povo Asiático , Índice de Massa Corporal , Humanos , Isoflavonas/administração & dosagem , Japão , Masculino , Atividade Motora , Ocupações , Razão de Chances , Neoplasias da Próstata/dietoterapia , Fatores de RiscoRESUMO
We conducted a review of previous cohort studies on the association between a history of diabetes mellitus (DM) and the occurrence of cancer. We limited the papers to those concerning cohort studies on 9 cancer sites, i.e. the kidney, liver, biliary tract, pancreas, colon or rectum, prostate, breast, endometrium, and ovary, in addition to all cancers. With regard to kidney, liver, biliary tract, pancreatic, colorectal, breast, and endometrial cancers, the risk of cancer development has been consistently reported to be positively associated with DM by two or more cohort studies. In contrast, DM was shown to relate negatively to the risk of prostate cancer by two cohort studies. However, there were no cohort studies which showed an either significantly positive or negative association of DM with ovarian cancer. Elevated levels of insulin or IGFs among DM patients have been proposed as a causal mechanism of increased risk for most of the reviewed cancers. In addition, increased estrogen levels in DM patients have been suggested to explain the casual mechanism of increased risk for kidney, breast and endometrial cancers, and decreased risk for prostate cancer. On the other hand, the possibility of detection bias has been suggested in the association of DM with the risk of most of these cancers. Obesity and heavy consumption of alcohol have been indicated as confounding factors in the relationship of DM to the risk for some of them. Thus, further studies are necessary for firm conclusions regarding the association of DM with cancer risk.
RESUMO
The age-adjusted incidence of prostate cancer is low in Japan, and it has been suggested that the traditional Japanese diet, which includes many soy products, plays a preventive role against prostate cancer. We performed a case-control study on dietary factors and prostate cancer in order to assess the hypothesis that the traditional Japanese diet reduces the risk of prostate cancer. Four geographical areas (Ibaraki, Fukuoka, Nara, and Hokkaido) of Japan were selected for the survey. Average daily intake of food from 5 years before the diagnosis was measured by means of a semi-quantitative food frequency questionnaire. We studied 140 cases and 140 individually age ( +/- 5 years)-matched hospital controls for analysis. Estimates of age-adjusted odds ratios (ORs) and linear trends were calculated by conditional logistic regression models with adjustment for cigarette smoking and total energy intake as confounding factors. Consumption of fish, all soybean products, tofu (bean curds), and natto (fermented soybeans) was associated with decreased risk. ORs of the fourth vs. first quartile and 95% confidence intervals (95%CIs) were 0.45 (0.20-1.02) for fish, 0.53 (0.24-1.14) for all soybean products, 0.47 (0.20-1.08) for tofu, and 0.25 (0.05-1.24) for natto. Consumption of fish and natto showed significantly decreasing linear trends for risk (P < 0.05). Consumption of meat was significantly associated with increased risk (the OR of the second vs. first quartile was 2.19, 95%CI 1.00-4.81). Consumption of milk, fruits, all vegetables, green-yellow vegetables, and tomatoes showed no association. Our results provide support to the hypothesis that the traditional Japanese diet, which is rich in soybean products and fish, might be protective against prostate cancer.