Disordered eating behaviors, emotional eating (EE), uncontrolled eating (UE), and cognitive restraint (CR) contribute to weight dysregulation and remain public health concerns in Japan. Body image distortion (BID), or the misperception of one's body size, has been linked to both being underweight and overweight. While health literacy (HL) and BID are individually associated with eating behaviors, the influence of higher-order HL domains-communicative and critical literacy-and their interactions with BID remain unclear. This study examined how HL and BID jointly influence multidimensional eating behaviors.

This study explores the level of frailty and the factors that influence elderly HF inpatients. It also examines the correlation between social frailty, perceived social support, and psychological resilience. It verifies psychological resilience and perceived social support as mediators between social frailty and frailty.

Idiopathic pulmonary fibrosis (IPF) is a disease with a poor prognosis that causes fibrosis in the interstitial space of the lungs, characterized by shortness of breath and progressive deterioration of lung function. The purpose of this study was to investigate the effectiveness of online Baduanjin exercise training on the functional capacity, respiratory function, and quality of life of patients with IPF.

Although seated isometric yoga has been shown to reduce the fatigue and pain of patients with myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS), some patients who are for the most part bedridden have difficulty practicing it. Many patients with this disease also suffer from fibromyalgia (FM). We developed a recumbent isometric yoga program for patients who were for the most part bedridden, including patients with comorbid FM. The aim of this study was to investigate the effect of this recumbent isometric yoga intervention with such patients.

Primary prevention of depressive symptoms among independent older adults is a critical public health challenge. Lifestyle factors and social support networks are increasingly recognized as pivotal determinants of mental health in this population. However, few longitudinal studies have examined these relationships, and little attention has been directed to gender-based differences. We investigated the associations between lifestyle factors and social support networks and the depressive symptoms of community-dwelling independent older adults in a sex-stratified 3-year longitudinal study.

Hypersomnia, defined as a total sleep time of over 10 h within a 24-h period, is common in patients with major depressive disorder (MDD). The circadian rhythm of patients with hypersomnia and depression is disturbed; however, differences from patients without hypersomnia remain unclear. We aimed to clarify differences over 24 h in the autonomic nervous system (ANS) activity of patient groups with MDD with or without hypersomnia.

Hwabyung is a psychiatric syndrome originally described in Korea that presents as chronic psychosomatic distress with emotional dysregulation and heightened somatic arousal. However, no objective analysis to clarify its progressive mechanism within a universal biopsychological framework has as yet been done that incorporates insights from traditional East Asian medical psychology.

Interoception refers to the multisensory integration and perception of the body's internal state within the central nervous system, which involves learning, memory, emotions, and experiences. Interoceptive dysfunction has been associated with alexithymia and alexisomia. Despite growing academic interest in interoception, standardized evaluation methods have yet to be established. The widely used Heartbeat Counting Task (HCT), a representative method for assessing interoceptive accuracy, has limitations owing to the potential influence of knowledge of heart rate, time perception, and tactile sensations. Therefore, more reliable assessment methods are needed. This study focused on the feasibility of the heaviness perception test as a method for assessing interoceptive accuracy and investigates its relationship with other interoceptive indices.

In Japan, approximately 20% of young women are underweight, a rate higher than that of other developed countries. For women, being underweight at a young age has been associated with amenorrhea, eating disorders, osteoporosis, and adverse pregnancy outcomes. We investigated young women's knowledge of these risks and associated factors.

Screening tools such as the Patient Healthcare Questionnaire (PHQ) and Hospital Anxiety and Depression Scale (HADS) are useful for detecting poststroke depression (PSD). However, validation of these tools has yet to be conducted in the Singapore stroke population.

Our previous studies demonstrated that the regular practice of recumbent isometric yoga reduced the fatigue of patients with myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS). Some patients with ME/CFS have postural orthostatic tachycardia syndrome (POTS); however, the effects of recumbent isometric yoga on orthostatic cardiovascular responses and whether recumbent isometric yoga improves POTS remain unknown. This pilot study was done to investigate the effect of recumbent isometric yoga on the orthostatic cardiovascular response of patients with ME/CFS.

Obesity is a chronic disease influenced by genetic, cultural, environmental, and psychosocial factors, making it difficult to manage through individual effort alone. Despite this complexity, obesity is often attributed to a lack of willpower and poor control over eating behaviors, contributing to stigma. However, research on this issue remains limited. This study quantified the extent to which multidimensional eating behaviors statistically explained the association between obesity and grit, which shared characteristics with self-control.

The COVID-19 pandemic had a negative impact on the mental health of university students. However, despite the many downsides of experiencing the pandemic, some students also experienced positive consequences, such as reduced academic pressure and increased time to attend to wellness. The impact may vary from individual to individual. This study investigated the effects of the pandemic on the mental health of Japanese university students who did not have depressive symptoms before the pandemic.

Weight restoration is a crucial factor in the treatment of anorexia nervosa (AN); however, there is currently no consensus on the amount of energy required to achieve weight gain in patients with AN.

To study how common are disordered eating behaviors among medical residents in different specialties and how certain preceding factors might contribute to that risk.

Cognitive behavioral therapy for insomnia (CBT-I) has a high potential for improving insomnia and depressive symptoms; however, it is unclear whether the improvement of symptoms reaches the level of healthy people without these symptoms. We aimed to examine whether digital CBT-I can improve the insomnia and depression symptoms of workers to healthy levels.

Psychosocial factors are involved in all types of chronic pain but seem to play a more prominent role in non-specific pain, such as chronic musculoskeletal pain (CMP), compared to a specific pain condition, such as osteoarthritis (OA). We explored if diagnose and the pain experience in patients with CMP predicted more problematic interpersonal relationships compared to patients with OA.

The prolonged COVID-19 pandemic has significantly affected the clinical care and the mental health of patients in psychosomatic medicine. Between late 2021 and early 2022, the Japanese Society of Psychosomatic Medicine (JSPM) and the Japanese Society of Psychosomatic Internal Medicine (JSPIM) conducted a nationwide physician survey to assess these effects. The survey identified difficulties in outpatient and inpatient care, increased use of telemedicine, and rises in patient numbers and symptom severity. Due to inconsistent findings in prior studies on long-term mental health effects of the pandemic, a follow-up survey was needed.

Over the past decade, mobile health (mHealth) technologies have been increasingly utilised to address eating behaviours and diet-related chronic diseases. Nevertheless, research assessing the momentary clinical characteristics of these conditions remains limited in Japan. This study provides an up-to-date overview of research using Ecological Momentary Assessment (EMA) technologies in Japanese clinical and non-clinical samples through a systematic review.

This study aimed to investigate whether psychological flexibility moderates the relationship between premenstrual dysphoric disorder (PMDD) symptoms and depression, anxiety, positive parenting, and negative parenting.

Chronic pain, particularly pain secondary to trauma, is often accompanied by a feeling of perceived injustice. A prevalent feeling of injustice often goes along with a prolonged rehabilitation and problematic development of chronic pain. This feeling also correlates to catastrophizing. To date, too little is known about how the perception of injustice in chronic pain patients is interwoven with a variety of psychological, social and somatic factors. The present study sought to examine whether perceived injustice is correlated with pain level, pain diagnosis, depression, anxiety, stress, quality of life, pain related disability, occupation status and ongoing workers compensation litigation.

The prevailing paradigm for the etiology of irritable bowel syndrome is that transient noxious events lead to long-lasting sensitization of the neural pain circuit, despite complete resolution of the initiating event. In this study, we tested the hypotheses that (1) the combination of maternal separation (MS) and previous colorectal inflammation induces extensive visceral hypersensitivity in rats and (2) visceral hypersensitivity induced by maternal separation and previous colorectal inflammation in rats is mediated via the corticotropin-releasing hormone receptor-1 (CRH-R1) pathway.

Individuals with type 2 diabetes and eating disorders must change their eating behaviors, which are often influenced by psychological factors like depression and anxiety. To efficiently assess daily psychological status, the present study aimed to develop computerized adaptive tests (CAT) based on item response theory (IRT).

Polycystic Ovary Syndrome (PCOS) is an endocrinal dysfunction characterized by androgen excess, irregular or absent menstruation, and polycystic ovarian morphology. While extensive research is conducted on the biochemical and medical ramifications of PCOS. However, there is not much research on cognitive mechanisms, especially attention. Attention is the fundamental cognitive ability that influences other cognitive and psychological phenomena. Therefore, the present study attempts to investigate the effect of PCOS on attention.

Premenstrual disorder (PMD), which includes premenstrual syndrome and premenstrual dysphoric disorder, has a complex pathogenesis and may be closely related to emotional cognition and memory. However, the mechanisms underlying these associations remain unclear. Therefore, this study used machine learning to explore the roles of various factors that are not typically considered risk-factors for PMD.

Fibromyalgia (FM) is a disease characterized by chronic widespread pain concomitant with various symptoms such as fatigue and anxiety. Although chronic inflammation has been implicated in the immunological abnormalities of FM, there are few human studies on complement and immunoglobulins. In this study, we investigated the immunological characteristics of FM patients and the association between their clinical symptoms and immunological indices, including complement and immunoglobulins.

Psychosocial stress can induce various physical symptoms, including fever, which is a commonly seen symptom in pediatric practice. In cases of unexplained fever, psychogenic fever should be considered as a potential cause. Children with neurodevelopmental disorders may be more vulnerable to stress and therefore more prone to developing somatic symptoms than their peers. This study aimed to elucidate the characteristics of children with psychogenic fever and comorbidity.

Recent studies have identified premenstrual disorders (PMDs) as a risk factor for postpartum depression. However, routine screening for preconception PMDs is not yet common in Japan. This study investigated the association between preconception PMDs and perinatal depression in a single tertiary care setting.