26 peer-reviewed studies linked to PTSD (diagnostic code 9411) in the VA Ready app, sourced from PubMed and the U.S. National Library of Medicine. Every citation is real and links to the source — bring them to your C&P exam or hand them to your VSO.
Meta-analysisPrimary2023
Studying the Prevalence of PTSD in Veterans, Combatants and Freed Soldiers of Iran-Iraq War.Psychology, health & medicine · 2023
- Pooled prevalence of PTSD in combatants ~38 percent.
- Prevalence in freed POWs substantially higher.
- Time since exposure did not reduce prevalence — chronic course.
Why it matters: Supports chronicity of combat PTSD; relevant for service connection and TDIU.
View on PubMed ↗Systematic reviewPrimary2020
Psychological and pharmacological interventions for PTSD and comorbid mental health problems following complex traumatic events.PLoS medicine · 2020
- Multicomponent psychological interventions (TF-CBT, EMDR) reduced PTSD symptoms with moderate-to-large effect sizes.
- Combined treatments addressing comorbid depression and anxiety produced additional benefit in complex PTSD.
- Pharmacotherapy alone produced smaller effects than psychotherapy.
Why it matters: Supports that combat veterans with comorbid depression and anxiety warrant multicomponent treatment.
View on PubMed ↗Cohort studyPrimary2020
Combat-Related PTSD and Comorbid Major Depression in U.S. Veterans: The Role of Deployment Cycle Adversity and Social Support.Journal of traumatic stress · 2020
- Comorbid major depression occurred in over half of U.S. veterans with combat-related PTSD.
- Higher deployment cycle adversity predicted greater comorbid depression severity.
- Lower post-deployment social support was independently associated with PTSD-MDD comorbidity.
Why it matters: Strong evidence supporting secondary service connection of MDD to combat PTSD.
View on PubMed ↗Meta-analysisPrimary2020
Epigenome-wide meta-analysis of PTSD across 10 military and civilian cohorts identifies methylation changes in AHRR.Nature communications · 2020
- DNA methylation changes in AHRR gene associated with PTSD across 10 cohorts.
- Biological signature of PTSD persists across trauma type and cohort.
- Epigenetic markers may serve as future biomarkers.
Why it matters: Provides biological evidence supporting legitimacy of the diagnosis in disability adjudication.
View on PubMed ↗ReviewPrimary2019
The Efficacy of Cognitive Processing Therapy for PTSD Related to Military Sexual Trauma in Veterans: A Review.Journal of evidence-based social work · 2019
- CPT demonstrates significant efficacy for PTSD secondary to MST.
- Veterans receiving CPT show clinically meaningful symptom reduction.
- Gender-sensitive delivery improves engagement and outcomes.
Why it matters: Supports MST-related PTSD as service-connected with established treatment.
View on PubMed ↗Meta-analysisPrimary2015
Benzodiazepines for PTSD: A Systematic Review and Meta-Analysis.Journal of psychiatric practice · 2015
- Benzodiazepines are ineffective for PTSD treatment and may worsen outcomes.
- Benzodiazepine use was associated with increased aggression, depression, and substance misuse in veterans with PTSD.
- Evidence supports avoiding benzodiazepines in PTSD; trauma-focused psychotherapy and SSRIs remain first-line.
Why it matters: Supports argument that veterans on benzodiazepines may have inadequately treated PTSD.
View on PubMed ↗Meta-analysisPrimary2013
Meta-analysis of the efficacy of treatments for posttraumatic stress disorder.The Journal of clinical psychiatry · 2013
- Psychotherapy (notably trauma-focused CBT and EMDR) produced large effect sizes for PTSD symptom reduction.
- SSRIs and SNRIs produced moderate effects; risperidone, topiramate, and venlafaxine had supportive evidence.
- Benzodiazepines lacked evidence of benefit and are not recommended for PTSD.
Why it matters: Foundational evidence supporting service-connected PTSD treatment efficacy.
View on PubMed ↗ReviewPrimary2012
Review: managing PTSD in combat veterans with comorbid traumatic brain injury.Journal of rehabilitation research and development · 2012
- PTSD-TBI comorbidity highly prevalent in OEF/OIF veterans; complicates treatment.
- Symptom overlap between PTSD and post-concussive syndrome can confound diagnosis.
- Integrated multidisciplinary care improves outcomes.
Why it matters: Supports secondary service connection of PTSD to documented TBI events.
View on PubMed ↗Systematic reviewPrimary2010
Prevalence estimates of combat-related post-traumatic stress disorder: critical review.The Australian and New Zealand journal of psychiatry · 2010
- Lifetime PTSD prevalence among Vietnam veterans 10-30 percent depending on methodology.
- Current PTSD prevalence in OEF/OIF veterans 4-17 percent.
- Higher combat exposure consistently correlated with elevated PTSD risk.
Why it matters: Authoritative prevalence data supporting combat-related PTSD as service-connected.
View on PubMed ↗Meta-analysisSupporting2025
Post-traumatic stress disorder, attention deficit and hyperactivity disorder, and 24 gastrointestinal diseases: Evidence from Mendelian randomization analysisMedicine (Baltimore) · 2025
- Causal effect of PTSD on GERD demonstrated via MR
- PTSD increases risk of multiple GI conditions including GERD and IBS
- Robust to sensitivity analyses
Why it matters: Strengthens causal argument for PTSD-secondary GERD
View on PubMed ↗Case-controlSupporting2024
Posttraumatic Stress Disorder and Obstructive Sleep Apnea in Twins.JAMA Network Open · 2024
- Vietnam Era Twin Registry to test PTSD-OSA association controlling for shared genetics and early environment
- PTSD severity associated with higher OSA prevalence within twin pairs
- Causal interpretation: PTSD increases OSA risk independent of familial confounders
Why it matters: Strongest available evidence for secondary service connection of OSA to PTSD
View on PubMed ↗Cohort studySupporting2024
Comorbidity Profiles of Posttraumatic Stress Disorder Across the Medical PhenomeBiological Psychiatry Global Open Science · 2024
- GERD ranks among most strongly elevated comorbidities in PTSD
- Cross-system comorbidity confirmed across multiple EHR networks
- Effect persists after demographic adjustment
Why it matters: Population-level support for PTSD-secondary GERD claims
View on PubMed ↗Cohort studySupporting2023
Assessment of Post-traumatic Stress Disorder Among Objective Esophageal Motility and Reflux Phenotypes in Symptomatic VeteransJournal of Clinical Psychology in Medical Settings · 2023
- PTSD significantly associated with functional esophageal disorders in veterans
- Veterans with PTSD more likely to have reflux hypersensitivity and functional heartburn than true GERD
- Symptom severity overlapped between true GERD and functional phenotypes with PTSD
Why it matters: Supports service connection linkage between PTSD and GERD-spectrum esophageal disease
View on PubMed ↗Cross-sectionalSupporting2023
Initial assessment of medical post-traumatic stress among patients with chronic esophageal diseasesNeurogastroenterology and Motility · 2023
- Medical PTSD symptoms prevalent in chronic esophageal disease including GERD
- Esophageal symptom flares correlate with traumatic stress responses
- Bidirectional mind-gut relationship documented
Why it matters: Peer-reviewed nexus between trauma-related stress and chronic GERD
View on PubMed ↗Meta-analysisSupporting2023
Investigating the shared genetic architecture of post-traumatic stress disorder and gastrointestinal tract disorders: a genome-wide cross-trait analysisPsychological Medicine · 2023
- Significant shared genetic architecture between PTSD and GERD
- Mendelian randomization supports causal effect of PTSD on GERD risk
- Shared loci identified across PTSD and multiple GI disorders
Why it matters: Provides biological mechanism for PTSD-GERD secondary service connection
View on PubMed ↗Cross-sectionalSupporting2023
Self-reported gastrointestinal disorders among veterans with Gulf War illness with and without posttraumatic stress disorderNeurogastroenterology and Motility · 2023
- IBS more prevalent in Gulf War veterans with PTSD vs without
- GWI plus PTSD multiplicatively increases GI burden
- Functional dyspepsia also elevated
Why it matters: Direct support for PTSD-secondary IBS in Gulf War veterans
View on PubMed ↗ReviewSupporting2022
Male Sexual Health Related Complications Among Combat VeteransSexual Medicine Reviews · 2022
- Contemporary review of ED and related complications in combat veterans
- Multiple mechanisms documented
- Comprehensive overview of veteran-specific issues
Why it matters: Comprehensive overview for ED claims and ratings.
View on PubMed ↗Meta-analysisSupporting2021
The global prevalence of depression, suicide ideation, and attempts in the military forces: a systematic review and Meta-analysis.BMC psychiatry · 2021
- Pooled global prevalence of depression in military forces ~23 percent.
- Pooled prevalence of suicidal ideation ~11 percent.
- Combat exposure and deployment were significant predictors.
Why it matters: Globally representative evidence supporting MDD service connection.
View on PubMed ↗Systematic reviewSupporting2021
Relationship Between Posttraumatic Stress Disorder and Sexual Difficulties: A Systematic Review of Veterans and Military PersonnelThe Journal of Sexual Medicine · 2021
- Comprehensive systematic review of PTSD-sexual dysfunction link
- Consistent association across studies
- Mechanisms include both psychological and pharmacological factors
Why it matters: Highest-tier evidence for secondary service-connection of ED to PTSD.
View on PubMed ↗Cohort studySupporting2021
Posttraumatic stress disorder and the risk of erectile dysfunction: a nationwide cohort study in TaiwanAnnals of General Psychiatry · 2021
- Large nationwide cohort confirms PTSD as independent risk factor for ED
- Effect persists after adjusting for confounders
- International corroboration of US findings
Why it matters: Corroborating international epidemiological evidence for PTSD-secondary ED.
View on PubMed ↗Cohort studySupporting2019
Risk factors for upper and lower functional gastrointestinal disorders in Persian Gulf War Veterans during and post-deploymentNeurogastroenterology and Motility · 2019
- Deployment-related stress, GI infection, and PTSD independently increased IBS risk
- Post-infectious IBS pattern documented
- Risk persists years post-deployment
Why it matters: Establishes deployment as risk factor for IBS
View on PubMed ↗Meta-analysisSupporting2018
Prevalence of Mental Health Disorders in Elderly U.S. Military Veterans: A Meta-Analysis and Systematic Review.The American journal of geriatric psychiatry · 2018
- Pooled prevalence of major depression in elderly U.S. veterans ~11 percent.
- GAD prevalence in elderly veterans ~5 percent.
- PTSD prevalence ~7 percent, higher in combat veterans.
Why it matters: Authoritative prevalence baseline for service-connected MDD/GAD/PTSD in older veterans.
View on PubMed ↗Systematic reviewSupporting2015
Systematic Review of Sexual Dysfunction Among Veterans with Post-Traumatic Stress DisorderSexual Medicine Reviews · 2015
- Earlier systematic review establishing PTSD-sexual dysfunction connection in veterans
- Multiple sexual dysfunction subtypes documented
- Treatment implications outlined
Why it matters: Historical evidence supporting secondary claims.
View on PubMed ↗Cohort studySupporting2014
Sexual dysfunction in male Iraq and Afghanistan war veterans: association with posttraumatic stress disorder and other combat-related mental health disorders: a population-based cohort studyThe Journal of Sexual Medicine · 2014
- Population-based cohort linking PTSD and combat mental health disorders to ED in OEF/OIF veterans
- Strong dose-response with PTSD severity
- Other mental health disorders also associated
Why it matters: Primary source for secondary service-connection of ED to PTSD.
View on PubMed ↗Cross-sectionalSupporting2013
Post-traumatic stress disorder, depression, and aggression in OEF/OIF veterans.Military medicine · 2013
- OEF/OIF veterans with PTSD had significantly higher rates of comorbid major depression.
- Combined PTSD and depression were associated with elevated aggression and impulsivity.
- Comorbid presentations predicted greater functional impairment.
Why it matters: Supports secondary service connection of MDD to PTSD in post-9/11 veterans.
View on PubMed ↗Cross-sectionalSupporting2011
Deployment-related TBI, persistent postconcussive symptoms, PTSD, and depression in OEF/OIF veterans.Rehabilitation psychology · 2011
- Deployment-related TBI significantly associated with persistent post-concussive symptoms, PTSD, and depression.
- Veterans with TBI had ~2x or greater risk of meeting criteria for major depression.
- PTSD partially mediated the TBI-depression relationship.
Why it matters: Supports secondary service connection of depression to in-service TBI.
View on PubMed ↗