The neuroactive potential of the human gut microbiota in quality of life and depression
The relationship between gut microbial metabolism and mental health is one of the most intriguing and controversial topics in microbiome research. Bidirectional microbiota-gut-brain communication has mostly been explored in animal models, with human research lagging behind. Large-scale metagenomics studies could facilitate the translational process, but their interpretation is hampered by a lack of dedicated reference databases and tools to study the microbial neuroactive potential. Surveying a large microbiome population cohort (Flemish Gut Flora Project, n = 1,054) with validation in independent data sets (ntotal = 1,070), we studied how microbiome features correlate with host quality of life and depression. Butyrate-producing Faecalibacterium and Coprococcus bacteria were consistently associated with higher quality of life indicators. Together with Dialister, Coprococcus spp. were also depleted in depression, even after correcting for the confounding effects of antidepressants. Using a module-based analytical framework, we assembled a catalogue of neuroactive potential of sequenced gut prokaryotes. Gut-brain module analysis of faecal metagenomes identified the microbial synthesis potential of the dopamine metabolite 3,4-dihydroxyphenylacetic acid as correlating positively with mental quality of life and indicated a potential role of microbial γ-aminobutyric acid production in depression. Our results provide population-scale evidence for microbiome links to mental health, while emphasizing confounder importance.
- Research Article
1
- 10.1371/journal.pone.0274973.r004
- Sep 29, 2022
- PLoS ONE
US service members injured in the recent conflicts in Iraq and Afghanistan were more likely to survive than those in previous conflicts because of advances in medicine and protective gear. However, there is limited research examining the long-term impact of injuries while deployed on physical and mental quality of life (QOL) among service members. We used data from two time-points with an average follow-up period of 4.27 years (SD = 2.13; n = 118,054) to prospectively examine the association between deployment and injury status with QOL. Data were derived from the Millennium Cohort Study surveys (2001 to 2016) and linked with the Department of Defense Trauma Registry (DoD-TR) among a cohort of US service members from all branches and components. The primary predictor (a combination of deployment and injury status) was comprised of the following four categories: 1) not deployed, 2) deployed and not injured, 3) deployed and non-battle injured, and 4) deployed and battle injured. Demographic, military, psychological and behavioral health, and life stress factors were adjusted for in multivariable models. Outcomes of interest were physical and mental QOL from the Short-Form Health Survey for Veterans (VR-36) measured at ~4 year follow-up. Between group comparisons indicated that those deployed and battle-injured had the greatest decline in both mental (-3.82) and physical (-10.13) QOL scores over time (p < .05). While deployment and injury status were associated with poorer mental and physical QOL in adjusted models; only the association between deployment and injury status with physical QOL was clinically meaningful (more than 2.5). In adjusted models, Time 1 mental and physical QOL explained most of the variance (23–25%) in Time 2 mental and physical health QOL as compared to other covariates (e.g., injury and deployment, and other sociodemographic factors increased variance by ~5%). Time 1 QOL was the most significant predictor of later QOL, but those injured while deployed experienced significant and meaningful decrements to long-term physical QOL. This suggests that prevention and rehabilitation interventions should focus on improving physical health among injured service members to avoid long-term adverse effects.
- Research Article
6
- 10.1371/journal.pone.0274973
- Sep 29, 2022
- PLOS ONE
US service members injured in the recent conflicts in Iraq and Afghanistan were more likely to survive than those in previous conflicts because of advances in medicine and protective gear. However, there is limited research examining the long-term impact of injuries while deployed on physical and mental quality of life (QOL) among service members. We used data from two time-points with an average follow-up period of 4.27 years (SD = 2.13; n = 118,054) to prospectively examine the association between deployment and injury status with QOL. Data were derived from the Millennium Cohort Study surveys (2001 to 2016) and linked with the Department of Defense Trauma Registry (DoD-TR) among a cohort of US service members from all branches and components. The primary predictor (a combination of deployment and injury status) was comprised of the following four categories: 1) not deployed, 2) deployed and not injured, 3) deployed and non-battle injured, and 4) deployed and battle injured. Demographic, military, psychological and behavioral health, and life stress factors were adjusted for in multivariable models. Outcomes of interest were physical and mental QOL from the Short-Form Health Survey for Veterans (VR-36) measured at ~4 year follow-up. Between group comparisons indicated that those deployed and battle-injured had the greatest decline in both mental (-3.82) and physical (-10.13) QOL scores over time (p < .05). While deployment and injury status were associated with poorer mental and physical QOL in adjusted models; only the association between deployment and injury status with physical QOL was clinically meaningful (more than 2.5). In adjusted models, Time 1 mental and physical QOL explained most of the variance (23-25%) in Time 2 mental and physical health QOL as compared to other covariates (e.g., injury and deployment, and other sociodemographic factors increased variance by ~5%). Time 1 QOL was the most significant predictor of later QOL, but those injured while deployed experienced significant and meaningful decrements to long-term physical QOL. This suggests that prevention and rehabilitation interventions should focus on improving physical health among injured service members to avoid long-term adverse effects.
- Research Article
- 10.29173/cjfy30025
- Jan 26, 2024
- Canadian Journal of Family and Youth / Le Journal Canadien de Famille et de la Jeunesse
The perceived discrepancies of adolescents regarding family functionality (the real vs. the ideal) and how it predicts their mental and physical quality of life are tested. A cross-sectional study using questionnaires was conducted. Roma adolescents (N = 139) with ages ranging from 12 to 17 years participated. Out of all, 38% are boys and 61,5% are girls. Results show that mental quality of life is predicted by family cohesion and family adjustment and suggest a nonlinear relation for physical quality of life. The discrepancy between the real and ideal levels of family cohesion determines adolescent’s mental quality of life. The direction of the discrepancy shows that mental quality of life is higher when the real family cohesion level is higher than the ideal one. The results suggest that both mental and physical quality of life of adolescents are predicted by family cohesion and family adjustment.
 
 People tend to thrive while having an image about themselves and they form this image by considering an ideal or a necessary way of being. Comparing the ideal to the real and present image of themselves people might experience maladjustment and could determine their mental health. The results of the study show that family cohesion and family adjustment perception of children determine their quality of life. Moreover, discrepancies between the ideal and real level are also an important determining factor for quality of life.
- Research Article
111
- 10.1186/s40359-018-0276-6
- Jan 8, 2019
- BMC Psychology
BackgroundEngagement in productive activities is an important determinant of mental health and quality of life (QoL). Persons with physical disabilities are often confronted with constraints to engage in productive activities and it remains largely unknown whether persons who nevertheless manage to be productive experience beneficial effects for mental health and QoL. This is the first study to analyse different productive activities (paid work, volunteering, education, housework) and its gender-specific associations with mental health and QoL in the disability setting, testing two contrasting hypotheses of Role Theory, the role strain and the role enhancement hypotheses.MethodsWe used data from a representative sample of 1157 men and women of employable age who sustained a severe physical disability (spinal cord injury). Load of engagement in paid work, volunteering, education, and housework was classified into three groups (none; moderate; high). To assess the total productivity load, a score over the four items was calculated. Diversity of engagement was assessed with variables on the number and combination of activities. Tobit regressions were applied to evaluate associations of load and diversity of engagement in productive activities with mental health (Mental Health Inventory, SF-36) and QoL (WHOQoL-BREF items).ResultsWe found that the total productivity load and the load of paid work were positively related to mental health and QoL in men. Individuals with moderate engagement in volunteering reported better mental health (both genders) and QoL (in women) than those with higher or no engagement. Our results support the role enhancement hypothesis, as mental health (in men) and QoL (both genders) increased with the number of performed activities. In men who had paid work, mental health and QoL increased consistently with each additional unpaid activity. In contrast, engagement in paid work played a minor role for mental health and QoL in women.ConclusionThis study in the disability setting provided clear support for the role enhancement hypothesis. Future research on the mechanisms behind the observed associations is warranted to develop interventions and policies that strengthen resources important for engagement in productive activities as well as for mental health and QoL in persons with physical disabilities.
- Research Article
80
- 10.1177/1479972315606312
- Sep 22, 2015
- Chronic Respiratory Disease
The aim of this study was to investigate the relative contributions of daytime sleepiness, sleep quality, depression, and apnea severity to mental and physical quality of life (QoL) in obstructive sleep apnea (OSA) patients. This was a cross-sectional study. Participants were adults diagnosed with OSA. Medical Outcomes Study-Short Form 36 (SF-36), Epworth Sleepiness Scale (ESS), Medical Outcomes Study-Sleep Scale, and Beck Depression Inventory (BDI) were used. The factors predicting the physical and mental QoL were evaluated using multiple linear regression analysis. Seven hundred ninety three OSA patients participated in the study. The average age was 48.9 years (SD = 11.7 years). The mean apnea-hypopnea index (AHI) was 29.5 hour(-1) (SD = 20.6 hour(-1)). The SF-36 scores were 72.6 (SD = 18.5). The BDI, sleep quality, and age were related to both mental and physical QoL. However, ESS, minimal arterial oxygen saturation, gender, and body mass index were associated with the physical but not mental QoL. The BDI was the strongest predictor of both physical and mental QoL. AHI was related to neither physical nor mental QoL. The potential factors affecting QoL are different between physical and mental dimensions of QoL. Depressive mood was the strongest predictor of both the physical and mental QoL.
- Research Article
16
- 10.1111/jgs.18762
- Jan 19, 2024
- Journal of the American Geriatrics Society
Loneliness is a significant public health challenge in the United States, especially among older adults. The epidemiology of loneliness among older adults in primary care is lacking, and specific research is needed on how loneliness impacts older primary patients' physical, mental, and cognitive health. A large sample of older primary care patients were recruited for a trial during the COVID-19 pandemic to measure the relationship between loneliness and physical and mental quality of life (QOL). Baseline data come from the Caregiver Outcomes of Alzheimer's Disease Screening (COADS) study, an ongoing randomized controlled trial evaluating benefits and risks of Alzheimer's disease and related dementias screening among primary care patients ages 65 and older, collected April 2020 to September 2021. Loneliness was measured with the 5-item, Loneliness Fixed Form Ages 18+ from The NIH Toolbox Emotion Battery, physical and mental health-related QOL was measured with the SF-36v2, and depression and anxiety severity were measured with the PHQ-9 and GAD-7, respectively. Spearman correlation analyses revealed that loneliness was moderately correlated with mental health QOL (r[601] = -0.43, p < 0.001), anxiety severity (r[601] = 0.44, p < 0.001), and depression severity (r[601] = 0.42, p < 0.001), while weakly correlated with physical health QOL (r[601] = -0.15, p < 0.001). After conducting unadjusted and adjusted linear regression models, we found that loneliness was significantly associated with both lower mental (p < 0.001) and physical (p < 0.001) QOL. Furthermore, loneliness remained significantly associated with worse mental QOL after adjusting for age, gender, race, ethnicity, educational level, perceived income status, neighborhood disadvantage, severity of comorbidities, and comorbid depression and anxiety. Primary care providers should discuss loneliness with their older adult patients and provide resources to help patients develop and maintain meaningful social relationships.
- Research Article
21
- 10.1016/j.ijcard.2017.08.026
- Aug 14, 2017
- International Journal of Cardiology
Quality of life metrics in arrhythmogenic right ventricular cardiomyopathy patients: The impact of age, shock and sex
- Research Article
313
- 10.1093/annonc/mdi210
- Jul 1, 2005
- Annals of Oncology
Anxiety, depression, and quality of life in caregivers of patients with cancer in late palliative phase
- Research Article
33
- 10.1093/humrep/deaa330
- Dec 30, 2020
- Human reproduction (Oxford, England)
What self-management factors are associated with quality of life among women with endometriosis? Greater self-efficacy was associated with improved physical and mental quality of life. Women with endometriosis have an impaired quality of life compared to the general female population. However, most studies have investigated quality of life in a hospital or clinic setting rather than a community setting and the association between self-management factors and quality of life have not, to date, been investigated. A cross-sectional, population-based online survey was performed, which was advertised through women's, community and endometriosis-specific groups. A total of 620 women completed the survey for this study. Mental and physical quality of life was assessed using the standardized SF36v2 questionnaire. Self-management factors included self-efficacy, partners in health (active involvement in managing the condition) and performance of self-care activities. Treatment approaches included the use of hormonal treatment, pain medications and complementary therapies and whether the participant had a chronic disease management plan. Hierarchical regression analyses were used to examine whether self-management and treatment factors were associated with quality of life. Both physical and mental quality of life were significantly lower among women with endometriosis compared to the mean scores of the general Australian female population (P < 0.001). Physical quality of life was positively associated with income sufficiency (P < 0.001) and greater self-efficacy (P < 0.001), but negatively associated with age (P < 0.001), pain severity (P < 0.001), use of prescription medications (P < 0.001), having a chronic disease management plan (P < 0.05) and number of self-care activities (P < 0.05). Mental quality of life was positively associated with being older (P < 0.001), partnered (P < 0.001), having a university education (P < 0.05), increasing self-efficacy (P < 0.001) and higher partners in health scores (P < 0.001). Results are derived from a cross-sectional study and can only be interpreted as associations not as causal relationships. The sample was more educated, more likely to speak English and be born in Australia than the general Australian female population of the same age, which may influence the generalizability of these results. This study investigated a knowledge gap by investigating quality of life of women with endometriosis in a large community sample. Self-efficacy was significantly associated with both physical and mental quality of life. Supporting women with endometriosis to improve self-efficacy through a structured chronic disease management programme may lead to improvements in this aspect of wellbeing. R.O. undertook this research as part of her PhD at Monash University, which was supported by an Australian Government Research Training Program Stipend. J.F. is the Finkel Professor of Global Public Health, which was supported by the Finkel Family Foundation. There are no conflicts of interest to declare. NA.
- Research Article
31
- 10.1016/j.ejogrb.2019.12.032
- Dec 24, 2019
- European Journal of Obstetrics & Gynecology and Reproductive Biology
Pain coping, pain acceptance and analgesic use as predictors of health-related quality of life among women with primary dysmenorrhea
- Research Article
25
- 10.3390/cancers14041093
- Feb 21, 2022
- Cancers
Simple SummaryAlthough the SARS-CoV-2 pandemic is likely to have created or aggravated mental health symptoms in cancer patients, high-quality longitudinal data on this topic are scarce. The aim of our prospective survey study was to assess cancer patient-reported mental health and quality of life (QOL) at four time points during the first two waves of the pandemic. We found that an important proportion of the 355 participants reported symptoms of COVID-19 peritraumatic distress (34.2% to 39.6%), depression (27.6% to 33.5%), anxiety (24.9% to 32.7%), and stress (11.4% to 15.7%) at any time point during the study period. However, we did not find clinically meaningful mental health and QOL changes during the study period. Additionally, we found no factors associated with better or worse mental health or QOL. In conclusion, the cancer patients who participated in this study showed considerable resilience against mental health and QOL deterioration during the pandemic.Purpose: This longitudinal survey study aimed to investigate the self-reported outcome measures of COVID-19 peritraumatic distress, depression, anxiety, stress, quality of life (QOL), and their associated factors in a cohort of cancer patients treated at a tertiary care hospital during the SARS-CoV-2 pandemic. Methods: Surveys were administered at four time points between 1 April 2020 and 18 September 2020. The surveys included the CPDI, DASS-21, and WHOQOL-BREF questionnaires. Results: Survey response rates were high (61.0% to 79.1%). Among the 355 participants, 71.3% were female, and the median age was 62.2 years (IQR, 53.9 to 69.1). The majority (78.6%) were treated with palliative intention. An important proportion of the participants reported symptoms of COVID-19 peritraumatic distress (34.2% to 39.6%), depression (27.6% to 33.5%), anxiety (24.9% to 32.7%), and stress (11.4% to 15.7%) at any time point during the study period. We did not find clinically meaningful mental health and QOL differences during the study period, with remarkably little change in between the pandemic’s first and second wave. We found no consistent correlates of mental health or QOL scores, including cancer type, therapy intention, and sociodemographic information. Conclusion: This cohort of cancer patients showed considerable resilience against mental health and QOL deterioration during the SARS-CoV-2 pandemic.
- Research Article
28
- 10.1016/j.msard.2020.102620
- Nov 10, 2020
- Multiple Sclerosis and Related Disorders
Depression mediates the relationship between fatigue and mental health-related quality of life in multiple sclerosis
- Research Article
25
- 10.1186/s12888-023-04787-9
- Apr 28, 2023
- BMC Psychiatry
Mental health problems and lower Quality of Life (QoL) are more common in deaf and hard-of-hearing – (D)HH – children than in typically hearing (TH) children. Communication has been repeatedly linked to both mental health and QoL. The aims of this study were to compare mental health and QoL between signing deaf and hard-of-hearing (DHH), hard-of-hearing (HH) and TH children and to study associations between mental health/QoL and severity of hearing loss and communication. 106 children and adolescents (mean age 11;8; SD = 3.42), 59 of them DHH and 47 HH, and their parents reported child mental health and QoL outcomes. Parents also provided information about their children's communication, hearing loss and education while their children's cognitive ability was assessed. Although (D)HH and their parents rated their mental health similar to their TH peers, about twice as many (D)HH children rated themselves in the clinical range. However, (D)HH children rated their QoL as similar to their TH peers, while their parents rated it significantly lower. Associations between communicative competence, parent-reported mental health and QoL were found, whereas severity of hearing loss based on parent-report had no significant association with either mental health or QoL. These results are in line with other studies and emphasise the need to follow up on (D)HH children's mental health, QoL and communication.
- Research Article
35
- 10.1016/j.sleep.2013.09.024
- Dec 23, 2013
- Sleep Medicine
Who is at risk for having persistent insomnia symptoms? A longitudinal study in the general population in Korea
- Research Article
143
- 10.1067/mhj.2001.116758
- Aug 1, 2001
- American Heart Journal
Predictors of quality of life 6 months and 1 year after acute myocardial infarction