Maternal fat intake in pregnancy and risk of depressive symptoms in Japanese adolescents: the Kyushu Okinawa Maternal and Child Health Study.

The current prebirth cohort study investigated the association between maternal intake of specific types of fatty acids during pregnancy and adolescent depressive symptoms based on the Center for Epidemiologic Studies Depression Scale. Subjects were 873 mother-child pairs. Dietary intake during the preceding month was assessed using a self-administered diet history questionnaire.

Breastfeeding and behavioral problems in five-year-old Japanese children: The Kyushu Okinawa Maternal and Child Health Study.

Purpose: This prebirth cohort study examined the relationship between breastfeeding duration and behavioral problems in five-year-old Japanese children.

Methods: Study subjects were 1198 mother-child pairs. Data were collected using a self-administered questionnaire.

Nut consumption during pregnancy is associated with decreased risk of peer problems in 5-year-old Japanese children.

Objectives: Nuts are nutrient-dense foods rich in unsaturated fatty acids, protein, dietary fiber, vitamins, and minerals. The present prebirth cohort study examined the association between maternal nut intake during pregnancy and the risk of childhood behavioral problems in 5-year-old Japanese children.

Methods: Study subjects were 1199 mother-child pairs.

Maternal Consumption of Dairy Products during Pregnancy Is Associated with Decreased Risk of Emotional Problems in 5-Year-Olds: The Kyushu Okinawa Maternal and Child Health Study.

Milk is a good source of fats, minerals, and vitamins. The present prebirth cohort study examined the association between maternal dairy product intake during pregnancy and the risk of childhood behavioral problems in 5-year-old Japanese children. Study subjects were 1199 mother-child pairs.

Sex differences in the association between smoking exposure and prevalence of wheeze and asthma in 3-year-old children.

Objective: We examined independent and joint associations between prenatal and postnatal smoking exposure and the prevalence of wheeze and asthma among 3-year-old Japanese children. Sex differences were also investigated.

Methods: Smoking exposure, allergic symptoms, and potential confounding factor data were collected using a self-administered questionnaire.

Pre- and postnatal maternal hair dye use and risk of wheeze and asthma in 5-year-old Japanese children: the Kyushu Okinawa Maternal and Child Health Study.

The present study investigated the association between pre- and postnatal maternal hair dye use and the risk of wheeze and asthma in Japanese children aged 5 years. Study participants were 1199 mother-child pairs. Information on the variables under study was obtained using repeated questionnaires completed by parents.

Tryptophan intake is related to a lower prevalence of depressive symptoms during pregnancy in Japan: baseline data from the Kyushu Okinawa Maternal and Child Health Study.

Objective: Tryptophan is an essential amino acid wholly derived from diet. While the majority of tryptophan is degraded through the kynurenine pathway into neuroactive metabolites like quinolinic acid and kynurenic acid, a small proportion of ingested tryptophan is metabolized into the neurotransmitter serotonin. The current cross-sectional study in Japan examined the association between tryptophan intake and depressive symptoms during pregnancy.

Maternal calcium intake during pregnancy and childhood blood pressure: the Kyushu Okinawa Maternal and Child Health Study.

Purpose: Evidence regarding the relationship between maternal calcium intake during pregnancy and childhood blood pressure is limited and inconsistent. The present prebirth cohort study examined this issue in Japanese children aged 6 years.

Methods: Subjects were 854 mother-child pairs.

Maternal consumption of soy and isoflavones during pregnancy and risk of childhood behavioural problems: the Kyushu Okinawa Maternal and Child Health Study.

It is uncertain whether the effects of prenatal exposure to isoflavones on childhood behaviour are beneficial or detrimental. This prebirth cohort study investigated the associations between maternal consumption of soy products and isoflavones during pregnancy and behavioural problems in Japanese children aged 5 years. Subjects were 1199 mother-child pairs.

Maternal metal intake during pregnancy and childhood behavioral problems in Japan: the Kyushu Okinawa Maternal and Child Health Study.

Objectives: Lower maternal metal intake during pregnancy might affect childhood development. The current prebirth cohort study investigated the relationship between maternal intake of zinc, magnesium, iron, copper, and manganese during pregnancy and behavioral problems in Japanese children aged five years.

Methods: Subjects were 1199 mother-child pairs.

Associations of job type, income, and education with postpartum depressive symptoms: The Kyushu Okinawa Maternal and Child Health Study.

Epidemiological evidence on the role of socioeconomic status on postpartum depressive symptoms has been inconsistent. The present prospective study investigated the relationship between employment, job type, income, and education and postpartum depressive symptoms. Subjects were 1316 Japanese women.

BAIAP2 rs8079781, postnatal smoking exposure, and emotional problems in Japanese children aged 5 years: the Kyushu Okinawa Maternal and Child Health Study.

BAIAP2 might be implicated in neurodevelopmental and psychiatric conditions via abnormal development of human cerebral asymmetry. The present prebirth cohort study examined the relationship between BAIAP2 single nucleotide polymorphism (SNP) rs8079781 and the risk of behavioral problems in Japanese children aged 5 years. Subjects were 1175 mother-child pairs.

Maternal consumption of vegetables, fruit, and antioxidants during pregnancy and risk for childhood behavioral problems.

Objective: The aim of this pre-birth cohort study was to examine the associations between maternal intake of vegetables, fruit, and antioxidants during pregnancy and behavioral problems in Japanese children 5 y of age.

Methods: Participants were 1199 mother-child pairs. Dietary intake was assessed using a diet history questionnaire.

Effects of Working Memory Capacity on Metacognitive Monitoring: A Study of Group Differences Using a Listening Span Test.

Monitoring is an executive function of working memory that serves to update novel information, focusing attention on task-relevant targets, and eliminating task-irrelevant noise. The present research used a verbal working memory task to examine how working memory capacity limits affect monitoring. Participants performed a Japanese listening span test that included maintenance of target words and listening comprehension.