According to the World Health Organization, approximately 1 in 3 women worldwide — roughly 736 million — have experienced physical or sexual violence from an intimate partner, or sexual violence from a non-partner, at some point in their lives. In the United States, the CDC's National Intimate Partner and Sexual Violence Survey found that about 41% of women and 26% of men have experienced contact sexual violence, physical violence, or stalking by an intimate partner during their lifetime.

These numbers are staggering, but they only describe the prevalence. What often goes unrecognized — even by the people living through it — is the depth and breadth of health damage that intimate partner violence (IPV) inflicts. Domestic violence is not just a social issue or a criminal matter. It is a public health crisis with consequences that extend far beyond the visible injuries: chronic pain conditions, cardiovascular disease, autoimmune disorders, traumatic brain injury, depression, PTSD, and increased risk of substance abuse and suicide.

This article examines what science tells us about how domestic violence affects the body and mind, why leaving an abusive relationship is both critically important and genuinely dangerous, and what evidence-based resources exist to help people do it safely.

If you are in immediate danger, call 911 (or your local emergency number). The National Domestic Violence Hotline is available 24/7 at 1-800-799-7233 or online at thehotline.org.

The Physical Health Consequences of Intimate Partner Violence

The most obvious physical effects of domestic violence are acute injuries — fractures, lacerations, contusions, and burns. But research over the past two decades has established that the health toll extends far beyond what emergency rooms see on any given night.

A landmark 2008 meta-analysis published in the Annals of Internal Medicine examined 37 studies involving over 135,000 participants and found that women who had experienced IPV had significantly higher rates of chronic pain, gastrointestinal disorders, gynecological problems, and sexually transmitted infections compared to women who had not.

The chronic stress of living with an abusive partner keeps the body's hypothalamic-pituitary-adrenal (HPA) axis in a state of sustained activation. Cortisol levels remain elevated. The sympathetic nervous system — the fight-or-flight response — stays perpetually engaged. Over months and years, this physiological state damages virtually every organ system:

  • Cardiovascular system: Women exposed to IPV face a significantly higher risk of hypertension, coronary heart disease, and stroke. A 2019 study in the Journal of the American Heart Association found that women who experienced physical or sexual IPV had a 25% higher risk of cardiovascular disease compared to women who did not.
  • Gastrointestinal system: Irritable bowel syndrome (IBS), chronic abdominal pain, and functional gastrointestinal disorders are significantly more common among IPV survivors. The gut-brain axis, disrupted by chronic stress, produces symptoms that are often misdiagnosed for years.
  • Immune system: Chronic stress suppresses immune function. Research published in Brain, Behavior, and Immunity has documented elevated inflammatory markers and impaired immune responses in women exposed to IPV, increasing susceptibility to infections and potentially accelerating the development of autoimmune conditions.
  • Chronic pain: Fibromyalgia, chronic headaches, and widespread musculoskeletal pain are disproportionately common among IPV survivors. These conditions often persist long after the abuse has ended.

Traumatic Brain Injury: The Hidden Epidemic

One of the most underrecognized consequences of domestic violence is traumatic brain injury (TBI). Abusers frequently target the head and face — punching, slapping, slamming a partner's head against walls or floors, or strangling them (which deprives the brain of oxygen). A 2018 study in the Journal of Aggression, Maltreatment & Trauma estimated that between 60% and 92% of women in domestic violence shelters had experienced at least one TBI.

These injuries are rarely diagnosed. Unlike athletes or soldiers, domestic violence survivors almost never receive brain imaging or neurological evaluation after being hit in the head. The symptoms — difficulty concentrating, memory problems, confusion, headaches, dizziness, mood swings, and sleep disruption — are frequently attributed to depression, anxiety, or simply the stress of the situation.

Repetitive brain injuries are especially dangerous. Research from the CDC has established that repeated TBIs have a cumulative effect: each subsequent injury causes more damage and takes longer to heal. Over time, this can lead to chronic traumatic encephalopathy (CTE), cognitive decline, and significantly elevated risk of neurodegenerative disease.

Strangulation — a common method of IPV assault — is particularly insidious. It can cause brain damage after just a few seconds of oxygen deprivation, yet leave minimal visible external injuries. A study published in the Journal of Emergency Medicine found that many strangulation victims initially appear uninjured but are at elevated risk of stroke, airway compromise, and delayed death from carotid artery dissection in the days and weeks following the assault.

Mental Health: Depression, PTSD, and the Trauma Response

The psychological consequences of domestic violence are profound, pervasive, and often long-lasting. Living in a state of constant threat fundamentally rewires the brain's stress response systems.

A comprehensive review in the journal Trauma, Violence & Abuse found that IPV survivors experience depression at rates 3 to 5 times higher than the general population. Post-traumatic stress disorder (PTSD) affects an estimated 31% to 84% of IPV survivors, depending on the population studied and the severity of the abuse.

The psychological mechanisms are well understood. Abuse is unpredictable — periods of apparent calm alternate with explosions of violence, a pattern psychologists call the "cycle of abuse." This intermittent reinforcement creates a state of hypervigilance: the brain learns that danger can emerge at any moment and remains on permanent alert. Over time, this persistent activation of the amygdala and suppression of the prefrontal cortex — the brain region responsible for rational decision-making — produces a cluster of symptoms:

  • Hypervigilance and startle responses — reacting to sudden sounds, movements, or perceived threats with disproportionate fear
  • Dissociation — mentally "checking out" during stressful situations as a protective mechanism
  • Emotional numbing — inability to feel pleasure, connection, or hope
  • Intrusive memories and flashbacks — re-experiencing traumatic events involuntarily
  • Sleep disturbances — insomnia, nightmares, and fragmented sleep patterns

Coercive control — non-physical forms of abuse including isolation, financial control, surveillance, and constant criticism — is increasingly recognized as equally damaging to mental health. A 2018 study in Psychology of Violence found that psychological aggression and coercive control predicted PTSD symptoms at least as strongly as physical violence.

Substance use disorders frequently co-occur with IPV. Survivors may turn to alcohol, prescription medications, or other substances to cope with pain, insomnia, and emotional distress. The relationship is bidirectional: while IPV increases the risk of substance misuse, substance use by either partner also increases the risk of violence.

Why Leaving Is Dangerous — and Why People Stay

One of the most common and least helpful questions asked about domestic violence survivors is: "Why don't they just leave?" The research on this topic is unambiguous: leaving is the most dangerous phase of an abusive relationship.

Studies have consistently shown that the period immediately after separation is when homicide risk peaks. A review in the American Journal of Public Health found that women who left or attempted to leave their abusers were at substantially higher risk of being killed. The abuser's loss of control triggers an escalation — stalking, threats, violence against children, and lethal attacks. In the United States, about 75% of domestic violence homicides occur when the victim is trying to leave or has recently left.

Beyond the direct physical danger, there are multiple structural reasons people stay in abusive relationships:

  • Financial dependence: Abusers often control household finances, prevent their partner from working, or sabotage their employment. A study in Violence Against Women found that economic abuse was one of the strongest predictors of a woman returning to an abusive partner.
  • Housing instability: Leaving often means homelessness. Domestic violence is one of the leading causes of homelessness among women in the United States.
  • Immigration status: Abusers may threaten deportation, confiscate passports, or exploit their partner's undocumented status.
  • Children: Fear of losing custody, disrupting children's schooling and social networks, or exposing children to a contested legal battle.
  • Trauma bonding: The cycle of abuse and reconciliation creates a neurochemical bond — intermittent reinforcement activates the same dopamine reward pathways involved in addiction, making the emotional attachment to the abuser incredibly difficult to break.
  • Isolation: Abusers systematically cut off their partner's social support — friends, family, coworkers — leaving the victim with no one to turn to.

Understanding these factors is not about excusing the abuser or blaming the victim. It is about recognizing that leaving an abusive relationship requires planning, resources, and support — and that doing it safely can literally be a matter of life and death.

Safety Planning: Evidence-Based Steps for Leaving

Domestic violence advocates emphasize that leaving should not be impulsive. A structured safety plan, developed ideally with a trained advocate, significantly improves outcomes. The National Domestic Violence Hotline provides personalized safety planning, and trained advocates are available 24/7 at 1-800-799-7233 (TTY: 1-800-787-3224) or by texting "START" to 88788.

Key elements of a safety plan include:

Before leaving:

  • Identify a safe place to go — a friend's home, family member, or domestic violence shelter. The National DV Hotline can help locate shelters in your area.
  • Gather essential documents: identification, birth certificates (yours and children's), Social Security cards, financial records, medical records, protective orders. Keep copies in a safe location outside the home.
  • Set aside emergency funds if possible — even small amounts of cash hidden safely. Open a separate bank account that the abuser does not know about.
  • Memorize critical phone numbers. Do not store hotline numbers under identifiable names in your phone.
  • Pack a "go bag" with essentials (medications, phone charger, change of clothes, children's necessities) and keep it somewhere accessible — at a trusted friend's home or in your car.

Digital safety:

  • Abusers frequently monitor phones, computers, and location-sharing apps. Use a public computer (library) or a trusted friend's device to research resources, contact shelters, or communicate with advocates.
  • Review your phone's location settings. Disable location sharing if safe to do so. Be aware that shared phone plans allow the account holder to see call and text records.
  • Consider a secondary prepaid phone for private communication.
  • Change passwords for email, banking, and social media from a device the abuser cannot access.

After leaving:

  • Obtain a protective order (restraining order) through the local court system. DV advocates can help with this process.
  • Inform children's schools, your workplace, and your landlord about the situation.
  • Document everything: dates, times, descriptions of incidents, photographs of injuries, threatening messages. This documentation is critical for legal proceedings.

Children and Domestic Violence: Intergenerational Health Effects

Domestic violence does not only affect the person being directly abused. Children who witness IPV — estimated at 15.5 million children annually in the United States alone — experience profound and lasting health consequences.

The landmark Adverse Childhood Experiences (ACE) study, one of the largest investigations of childhood trauma and later-life health outcomes, identified household domestic violence as one of the key adverse childhood experiences. Adults who reported witnessing domestic violence as children had significantly elevated rates of heart disease, diabetes, depression, substance abuse, and early death — even decades later.

Children exposed to IPV show measurable changes in brain development. A study published in NeuroImage: Clinical found reduced cortical thickness and altered white matter integrity in children who had witnessed domestic violence, particularly in brain regions associated with emotional regulation and threat processing. These neurological changes mirror those seen in children who were directly physically abused.

The intergenerational cycle is also well documented. Children who grow up in homes with domestic violence are at increased risk of either perpetrating or experiencing partner violence in their own adult relationships — not because violence is "learned" in a simplistic sense, but because early exposure alters the developing brain's threat-detection systems, attachment patterns, and emotional regulation capacities.

Breaking this cycle requires early intervention. Trauma-focused cognitive behavioral therapy (TF-CBT) has strong evidence supporting its effectiveness for children exposed to domestic violence, helping them process traumatic experiences and develop healthier coping strategies.

Recovery and Healing: What the Science Shows

Recovery from domestic violence is not a linear process, and its timeline varies enormously depending on the severity and duration of abuse, the availability of support, and individual resilience factors. But research consistently shows that recovery is possible — and that appropriate intervention makes a significant difference.

Trauma-focused therapy works. A meta-analysis in Clinical Psychology Review found that trauma-focused cognitive behavioral therapy (TF-CBT) and EMDR (Eye Movement Desensitization and Reprocessing) significantly reduced PTSD symptoms in IPV survivors. These treatments help rewire the brain's fear responses, processing traumatic memories so they no longer trigger overwhelming emotional and physical reactions.

Physical health can improve. While some damage (particularly from TBI) may be permanent, many of the chronic health conditions associated with IPV — cardiovascular risk, chronic pain, gastrointestinal symptoms, immune dysfunction — can improve once the chronic stress of the abusive environment is removed. The body's stress response systems gradually recalibrate to baseline levels.

Social support is protective. Research consistently identifies social connection as one of the strongest predictors of positive outcomes after leaving an abusive relationship. A study in the Journal of Interpersonal Violence found that perceived social support was significantly associated with reduced PTSD and depressive symptoms in IPV survivors.

Rebuilding autonomy matters. Economic independence, stable housing, legal resolution, and re-establishing social connections all contribute to long-term recovery. Many domestic violence organizations provide comprehensive services — not just shelter, but legal advocacy, financial counseling, job training, and children's programs — precisely because recovery requires addressing multiple dimensions simultaneously.

Documenting Your Health: A Note on Tracking Safely

For people experiencing or recovering from domestic violence, keeping a record of health symptoms, mood changes, and physical complaints can serve multiple purposes: it provides documentation that may be useful in legal proceedings, helps healthcare providers understand the full picture, and allows survivors to see patterns they might otherwise miss.

WatchMyHealth's symptom logging, mood tracking, and health journal features can help with this documentation — recording dates and descriptions of pain episodes, sleep disruption, anxiety, and other health changes over time. The medication tracker can also help ensure consistency with prescribed treatments during the chaos of an abusive situation or the upheaval of leaving one.

However, digital safety must come first. If an abuser has access to your phone or monitors your app usage, a health tracking app could inadvertently become a source of danger. Before using any app to document abuse-related health issues, consider the following:

  • Does the abuser have your phone passcode or fingerprint access?
  • Is your phone on a shared account where the abuser could see app downloads or usage data?
  • Could the abuser pick up your phone and open the app?

If the answer to any of these is yes, it may be safer to keep written records in a hidden location or to use a device the abuser does not know about. The National DV Hotline (1-800-799-7233) can help you think through digital safety strategies specific to your situation.

For those who are safely out of an abusive relationship, consistent health tracking during recovery can be genuinely valuable — providing both you and your healthcare providers with objective data on how your physical and mental health is improving over time.

Resources and Crisis Information

If you or someone you know is experiencing domestic violence, help is available:

  • National Domestic Violence Hotline: 1-800-799-7233 (available 24/7) | TTY: 1-800-787-3224 | Text "START" to 88788 | thehotline.org
  • National Sexual Assault Hotline (RAINN): 1-800-656-4673 | rainn.org
  • Crisis Text Line: Text HOME to 741741
  • National Child Abuse Hotline: 1-800-422-4453
  • StrongHearts Native Helpline (for Native Americans): 1-844-762-8483
  • National Network to End Domestic Violence (safety planning technology): nnedv.org/content/technology-safety/

For those outside the United States, the HotPeachPages directory maintains a comprehensive list of domestic violence resources organized by country.

Remember: Domestic violence is never your fault. It is not caused by anything you said, did, or failed to do. Abusers choose to abuse — and you deserve safety, health, and the opportunity to heal.

Moving Forward

Domestic violence remains one of the most significant public health challenges worldwide. The WHO has called it a global health problem of epidemic proportions, and the evidence is clear that its health consequences — physical, psychological, and neurological — are severe, wide-ranging, and often long-lasting.

But the evidence is equally clear that intervention works. Safety planning saves lives. Trauma-focused therapy heals psychological wounds. Social support accelerates recovery. And systemic changes — improved legal protections, better-funded shelters, universal screening in healthcare settings, and economic support for survivors — can reduce both the prevalence and the impact of IPV.

The American Medical Association, the American College of Obstetricians and Gynecologists, and the U.S. Preventive Services Task Force all recommend routine screening for IPV in clinical settings. If your healthcare provider has never asked you about safety in your relationships, consider that an invitation to bring it up yourself — they are trained to help.

If you are currently in an abusive relationship, know this: the health effects described in this article are real, documented, and serious — but they are also, in many cases, reversible. Your body and mind have a remarkable capacity to heal, given safety and support. Taking the first step — whether that is calling the hotline, confiding in a trusted friend, visiting thehotline.org on a safe device, or simply acknowledging to yourself that what is happening is not okay — is an act of extraordinary courage.

You are not alone, and help is available right now.