Ryan Hammoud

ORCID: 0000-0002-0848-0753
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About
Contact & Profiles
Research Areas
  • Urban Green Space and Health
  • Noise Effects and Management
  • Air Quality and Health Impacts
  • Behavioral Health and Interventions
  • Climate Change and Health Impacts
  • Child and Adolescent Psychosocial and Emotional Development
  • Place Attachment and Urban Studies
  • Schizophrenia research and treatment
  • Animal and Plant Science Education
  • Digital Mental Health Interventions
  • Environmental Education and Sustainability
  • Human-Animal Interaction Studies
  • Psychological Well-being and Life Satisfaction
  • Health disparities and outcomes
  • Global Health Care Issues
  • Mental Health Research Topics
  • Bipolar Disorder and Treatment
  • Sleep and related disorders
  • Child Abuse and Trauma
  • Community Health and Development
  • COVID-19 and Mental Health

King's College London
2017-2025

National Institute for Health Research
2023

Abstract Purpose The World Health Organisation (WHO) recently ranked air pollution as the major environmental cause of premature death. However, significant potential health and societal costs poor mental in relation to quality are not represented WHO report due limited evidence. We aimed test hypothesis that long-term exposure is associated with health. Methods A prospective longitudinal population-based survey was conducted 1698 adults living 1075 households South East London, from 2008...

10.1007/s00127-020-01966-x article EN cc-by Social Psychiatry and Psychiatric Epidemiology 2020-10-24

Existing evidence on the beneficial effects of nature mental health comes from studies using cross-sectional designs. We developed a smartphone-based tool (Urban Mind; www.urbanmind.info) to examine how exposure natural features within built environment affects well-being in real time. The was used monitor 108 individuals who completed 3013 assessments over 1-week period. Significant immediate and lagged associations with were found for several features. These stronger people higher trait...

10.1093/biosci/bix149 article EN cc-by BioScience 2017-11-19

Background Growing evidence suggests that air pollution exposure may adversely affect the brain and increase risk for psychiatric disorders such as schizophrenia depression. However, little is known about potential role of in severity relapse following illness onset. Aims To examine longitudinal association between residential mental health service use (an indicator relapse) among individuals with first presentations psychotic mood disorders. Method We identified aged ≥15 years who had...

10.1192/bjp.2021.119 article EN cc-by The British Journal of Psychiatry 2021-08-19

Abstract The mental health benefits of everyday encounters with birdlife for are poorly understood. Previous studies have typically relied on retrospective questionnaires or artificial set-ups little ecological validity. In the present study, we used Urban Mind smartphone application to examine impact seeing hearing birds self-reported wellbeing in real-life contexts. A sample 1292 participants completed a total 26,856 momentary assessments between April 2018 and October 2021. Everyday were...

10.1038/s41598-022-20207-6 article EN cc-by Scientific Reports 2022-10-27

Adverse childhood experiences (ACEs) are common in people at clinical high-risk for psychosis (CHR), however, the relationship between ACEs and long-term outcomes is still unclear. This study examined associations CHR individuals. 344 individuals 67 healthy controls (HC) were assessed using Childhood Trauma Questionnaire (CTQ), Bullying Experience of Care Abuse (CECA). followed up to 5 years. Remission from state, transition (both defined with Comprehensive Assessment an At Risk Mental...

10.1038/s41537-025-00562-9 article EN cc-by Schizophrenia 2025-02-20

Loneliness is a major public health concern with links to social and environmental factors. Previous studies have typically investigated loneliness as stable emotional state using retrospective cross-sectional designs. Yet people experience different levels of throughout the day depending on their surrounding environment. In present study, we associations between factors (i.e. overcrowding, population density, inclusivity contact nature) in real-time. Ecological momentary assessment data was...

10.1038/s41598-021-03398-2 article EN cc-by Scientific Reports 2021-12-20

Existing evidence shows positive effects of being in nature on wellbeing, but we know little about the mental health benefits spending time near canals and rivers specifically. This study investigates association between visits to wellbeing. We addressed following questions: Are associated with higher levels wellbeing? Does this depend age gender? vary people without a diagnosis illness? used Urban Mind, flexible smartphone application for examining impact different aspects built social...

10.1371/journal.pone.0271306 article EN cc-by PLoS ONE 2022-08-31

Abstract Using smartphone-based ecological momentary assessment, this study investigated an association between natural diversity on mental wellbeing. A sample of 1,998 participants completed 41,448 assessments April 2018 and September 2023. Environments which included a larger range features, such as trees, plants birdlife (high diversity) were associated with greater wellbeing than environments including smaller features (low diversity). There was evidence mediating effect the These...

10.1038/s41598-024-55940-7 article EN cc-by Scientific Reports 2024-04-16

COVID-19 pandemic has affected our lifestyle and physical mental well-being. We aimed to study the effect of being outdoors well-being after pandemic.We used smartphone based ecological momentary assessments (EMA) (Urban Mind app) Spanish general population. collected socio-demographic data, past current health, social environment. Participants were recruited during 5 months (February June 2021). Longitudinal associations between EMA anxiety, depression, loneliness, tiredness, happiness...

10.1016/j.psychres.2023.115494 article EN cc-by Psychiatry Research 2023-09-25

It has been suggested that exposure to natural features within the urban environment can have beneficial effects on mental health. However, most existing evidence comes from studies used a cross-sectional design and did not consider interaction with individual characteristics such as age, lifestyle vulnerability illness. We developed smartphone-based tool (Urban Mind; www.urbanmind.info) examine how affects momentary wellbeing in real-time real-world environments this depends...

10.1289/isesisee.2018.p02.0760 article EN ISEE Conference Abstracts 2018-09-24

Abstract Aims Sleep problems are common in people with a psychosis‐spectrum diagnosis and associated worse psychotic symptoms lower quality of life. also frequent individuals at clinical high risk for psychosis (CHR‐P) however, less is known about the prevalence association this population. This study investigates sleep within CHR‐P associations attenuated positive symptoms, transition to psychosis, time functioning. Methods The records interactive search (CRIS) tool was used carry out...

10.1111/eip.13210 article EN cc-by Early Intervention in Psychiatry 2021-08-30

The World Health Organization (WHO) recently estimated that ambient air pollution causes 482,000 premature deaths within the WHO European Region. However, significant potential health and societal costs of poor mental in relation to quality is not represented report. This reflects limited number studies directly linking exposure adverse outcomes published date. aim study address gaps existing literature quantify effect medium-term residential traffic at level on common psychiatric disorders...

10.1289/isesisee.2018.o02.04.31 article EN ISEE Conference Abstracts 2018-09-24
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