What Really Happens to Your Body When You’re Touch-Deprived

A hug from someone you love. A friend’s hand on your shoulder. Holding hands with your partner on the couch. These are such ordinary parts of life that most of us probably don’t think much about what happens when they disappear.

But during the COVID-19 pandemic, millions of people suddenly found out.

Lockdowns didn’t just separate people socially. They also removed many of the small physical interactions that normally happen throughout the day, from hugs and handshakes to reassuring touches between friends and family. For researchers who study human touch, it created an unprecedented opportunity to see what happens when people across nearly every age group go without it.

What they observed helped bring new attention to something sometimes called “touch hunger” or “touch deprivation.”

The effects may go well beyond simply missing physical affection. Research increasingly suggests that wanted, consensual touch interacts with systems involved in stress, emotional regulation, social bonding, and even how the brain responds to perceived threats.

And scientists are beginning to understand why.

Our skin contains specialized nerve fibers that respond particularly strongly to gentle, affectionate touch, creating a biological pathway between something as simple as a reassuring hand and some surprisingly complex activity inside the brain.

The biology behind a reassuring squeeze

Buried in the hairy skin of the forearm, back, and scalp are unmyelinated sensory fibers called C-tactile afferents (CT fibers). Their responses are tuned to a specific speed of gentle stroking – around 1 – 10 centimeters per second – which positions them as mediators of affective, or pleasant, touch in contexts of social bonding and comfort. Stroking too fast or too hard, and they barely fire. A slow, gentle caress along the forearm, and they respond strongly.

CT afferent activation can facilitate the release of oxytocin, which reduces cortisol and promotes feelings of safety and social bonding. Several studies have documented decreased cortisol levels and increased oxytocin levels in response to touch, with implications for both stress reactivity and social bonding.

These fibers also interact with the body’s threat-detection systems. A 2025 study published in Social Cognitive and Affective Neuroscience found that affective touch can decrease sympathetic nervous system activity – the “fight or flight” branch – and increase vagal dominance, the body’s calming, restorative response. Wanted touch actively shifts the body’s physiology away from a stress state.

What happens in the brain

Gothard’s research at the University of Arizona focuses on how tactile signals from the periphery acquire emotional significance in the brain, with the amygdala – the region involved in processing emotion and threat – playing a central role.

In her animal research, Gothard monitored brain activity in monkeys during grooming, a primate behavior that functions as the animal equivalent of affective touch. While the amygdala typically tracks external events with heightened sensitivity, this responsiveness dissipated during grooming. In her words: “In over 30 years, I’ve never seen a single stimulus capable of so profoundly dampening neural responsiveness in the amygdala. It appeared that the animals effectively disengaged from the outside world.”

Gothard has speculated that touch interventions might represent a new avenue for addressing mental health conditions including anxiety and PTSD. The grooming data comes from non-human primates studied in controlled conditions and does not establish that consensual touch treats anxiety or PTSD in humans. The animal findings are a compelling direction, not a conclusion.

Research in humans consistently shows that wanted touch influences emotional and physiological regulation. The social context of touch matters enormously: the same pressure, sweep speed, and hand temperature can register very differently depending on whether the touch is welcome or not. Unwanted touch, even when physically identical to wanted touch, produces a different amygdala response. Wanted, consensual, affectionate contact between people who feel safe with each other produces the strongest and most consistent benefits in the research record.

Touch deprivation effects on wellbeing

In adults, insufficient tactile and social interaction produces a distinct pattern of effects. Loneliness, particularly common in older adults and widespread during COVID-19, is linked to increased rates of depression, anxiety, and elevated cardiovascular risk.

A 2026 study in the European Journal of Social Psychology found that restricted interpersonal touch experiences result in detrimental effects on anxiety, loneliness, and psychological wellbeing. A separate 2026 study confirmed that feeling touch deprived was associated with depression, anxiety, stress, and sleep disturbances. Both are correlational findings rather than proof of a direct causal chain.

The effects are visible from the earliest moments of life. A 2025 Cochrane review found that skin-to-skin contact between mothers and newborns in the first hour after birth supports body temperature regulation and breastfeeding, and helps newborns adapt to life outside the womb.

Touch also buffers physical pain. Consoling touch has repeatedly been shown to reduce the experience of physical pain and increase feelings of comfort. James Coan, a professor of psychology at the University of Virginia and Director of the Virginia Affective Neuroscience Laboratory, whose social baseline theory argues that the human brain evolved to expect physical contact with others, has shown that holding a loved one’s hand during a threatening situation measurably reduces the brain’s neural response to that threat. When this expectation of physical presence goes unmet, Coan argues, the body treats the absence as a stressor in its own right.

Touch is not one-size-fits-all

Culture shapes norms around touch dramatically, and personal history – including experiences of trauma or abuse – can make physical contact feel unsafe rather than comforting. Individual personality matters too: some people find frequent physical contact energizing while others find it draining, even when it comes from people they love.

The research on touch and wellbeing consistently frames these benefits in terms of wanted, consensual contact. Studies show that the amygdala responds very differently to welcome versus unwelcome touch: even when the objective physical properties of the touch are identical, the brain distinguishes sharply between the two. The comfort and calm that affectionate touch can produce depend entirely on the relationship and the context.

Affectionate touch between romantic partners is among the most studied forms, with consistent associations with greater relationship satisfaction and reduced stress. Touch between close friends, family members, and even in brief professional interactions has also been associated with positive effects. A 2012 study in social psychology found that a brief, light touch on the back or shoulder increased the likelihood that a person would agree to help with a request, suggesting touch communicates social safety even in non-intimate contexts.

Read More: Why Being in a Nurturing Relationship Could Help You Heal Faster

Practical steps for people who want more touch

For people who recognize that they may be touch-deprived, the options span a wide range of evidence strength. Some are well-studied; others are promising but less conclusively proven.

Affectionate touch with a trusted partner, family member, or close friend is the most direct route. The physical specifics matter: gentle, slow touch on the arms, back, or scalp is where CT afferents are most densely distributed and most responsive. Even brief, regular contact – a hug when arriving home, a hand on the arm during conversation – adds up physiologically.

For people who live alone or have limited access to physical contact, pets offer a documented alternative. A 2025 study in Scientific Reports found that pet owners experienced lower loneliness than non-pet owners when living alone, and that reduced loneliness mediated improvements in wellbeing. The researchers emphasize encouraging healthy emotional attachment to pets while continuing to invest in human social relationships, rather than treating pet ownership as a substitute for them.

Weighted blankets represent another option, particularly for people who don’t have regular access to other forms of touch. They work through deep pressure stimulation rather than the gentle stroking that activates CT fibers, so the mechanism is different. A 2024 review and meta-analysis in the Journal of Psychiatric Research found that weighted blankets improved anxiety symptoms in psychiatric patients, with modest effect sizes and some inconsistency in methodology across studies. A blanket weighing roughly 10% of your body weight is a commonly cited practical guideline from Cleveland Clinic.

Self-touch is the least-studied of these options. Gentle self-massage, placing a hand over the chest, or stroking the forearm can activate some of the same CT fiber pathways as social touch, though research on whether this reliably produces the same psychological effects as interpersonal touch remains early-stage. Treat it as a low-cost experiment rather than a proven intervention.

What this means for you

Human touch is easy to dismiss as something that’s simply comforting. The research suggests there’s more happening beneath the surface.

Wanted, affectionate touch can influence systems involved in stress, social bonding, pain, and emotional regulation. Specialized nerve fibers in the skin respond to gentle touch, while researchers have observed corresponding changes in the autonomic nervous system and areas of the brain involved in processing emotion and threat.

But the word wanted matters enormously.

The same physical contact can feel reassuring to one person and uncomfortable or threatening to another. Culture, relationships, personality, and past experiences all influence how touch is perceived, which is why the research consistently points toward consensual, welcome contact, rather than touch itself, as the important factor.

There is also still plenty researchers don’t know. Much of the evidence connecting touch deprivation with anxiety, depression, loneliness, and sleep problems is observational, meaning it can’t prove that a lack of touch directly caused those outcomes. And some of the most striking findings about how touch affects the brain come from animal research rather than human trials.

Still, the broader picture is becoming increasingly difficult to ignore. Physical contact isn’t just a social gesture. For humans, it appears to be woven into some of the biological systems that help us feel safe and connected to other people.

Sometimes a hug really can be more than just a hug.

Disclaimer: This information is not intended to be a substitute for professional medical advice, diagnosis, or treatment and is for information only. Always seek the advice of your physician or another qualified health provider with any questions about your medical condition and/or current medication. Do not disregard professional medical advice or delay seeking advice or treatment because of something you have read here.

AI Disclaimer: This article was created with the assistance of AI tools and reviewed by a human editor.

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