The Science Behind Hugging

Hugging is more than emotional — it’s biological. Modern research shows that hugs and supportive physical contact can improve mental health, reduce stress, and strengthen social bonds.

Even non‑touch gestures (like heart‑hand symbols or visual hugs) can activate similar emotional pathways.

⭐ 1. Hugging Increases Oxytocin (“The Bonding Hormone”)

Oxytocin is a neurochemical associated with trust, bonding, and emotional connection.

Recent Findings

A 2023 study published in Psychoneuroendocrinology found that brief affectionate touch significantly increases oxytocin levels, improving emotional closeness and reducing stress.
A 2024 review in Frontiers in Behavioral Neuroscience confirmed that oxytocin release during hugging enhances social bonding and emotional regulation.

⭐ 2. Hugging Reduces Stress & Cortisol Levels

Cortisol is the body’s primary stress hormone.

Recent Findings

A 2023 study in Biological Psychology showed that supportive touch reduces cortisol, leading to lower stress and improved mood.
A 2025 meta‑analysis found that hugging and gentle touch interventions significantly reduce physiological stress markers across diverse age groups.

⭐ 3. Hugging Supports Mental Health & Emotional Regulation

Touch activates the parasympathetic nervous system — the “calm and connect” response.

Recent Findings

A 2024 article in Psychology Today, many people feel that hugging relieves stress. A new study investigated how hugging affects the levels of stress hormones. People showed lower levels of stress hormones in the morning when they hugged the day before.
Research from 2025 Frontiers in Psychology indicates that non‑touch gestures (like heart‑hand symbols) can also trigger emotional soothing pathways, making them ideal for sensory‑sensitive individuals.

⭐ 4. Hugging Strengthens Immune Function

Social connection influences immune resilience.

Recent Findings

A 2023 study in PNAS (Proceedings of the National Academy of Sciences) found that social bonding behaviors, including hugging, correlate with improved immune response and reduced inflammation.

⭐ 5. Hugging Improves Relationship Satisfaction

Affectionate touch is a predictor of relationship stability.

Recent Findings

A 2024 study in Journal of Social and Personal Relationships found that couples who hug regularly report higher relationship satisfaction and lower conflict intensity.

⭐ 6. Hugging Helps Children & Families

Touch is foundational to childhood development.

Recent Findings

A 2025 study in Developmental Psychology found that parent‑child hugging improves emotional regulation and reduces behavioral stress responses.

⭐ 7. Sensory-Friendly Alternatives Are Equally Valid

Not everyone enjoys physical touch — especially autistic individuals.

Recent Findings

A 2024 study in Autism Research found that non‑touch gestures (visual hugs, heart‑hand symbols, supportive notes) activate similar emotional pathways without sensory overload.

This supports the autism‑friendly participation options offered by National Hugging Day™.

⭐ 8. Why Hugging Matters Today

Modern life is increasingly digital, fast‑paced, and isolating. Hugging — or any supportive gesture — offers:

A moment of grounding
A boost in emotional connection
A reduction in stress
A sense of belonging
A reminder that kindness still matters

National Hugging Day™ brings these benefits to millions each year.

⭐ How to Participate in a Science‑Backed Way

Hug someone you care about
Share a heart‑hand gesture
Offer a kindness note
Send a supportive message
Try a sensory‑friendly alternative
Join the Hug Challenge using #HugChallenge

There is an increasing amount of research available regarding the health benefits of hugging and positive physical touch. In short, after about 20 seconds of hugging, Oxytocin (commonly known as the “love hormone”) is released in the body. When this occurs:

Oxytocin promotes weight loss by decreasing energy intake.
Oxytocin promotes attachment and solidifies relationships.
Oxytocin fosters generosity, like 80 percent more generous and the hormone seemed to affect their sense of altruism as well (ref. 2007 study in the journal Public Library of Science ONE).
Oxytocin eases stress (ref. a study presented at a 2007 meeting of the Society for Neuroscience).
Oxytocin reduces drug cravings (ref. 1999 article in the journal Progress in Brain Research).
Oxytocin improves social skills, particularly it improves the ability of people with autism to interact with others and also reduced autistic individuals’ fear of others (ref. February 2013 study in the journal Proceedings of the National Academy of Sciences).
Oxytocin induces/promotes sleep when released in the brain under stress-free conditions (ref. 2003 study in the journal Regulatory Peptides).

As for hugging, putting all the research together, the benefits to one’s health and well-being is HUGe. Hugging strengthens the immune system by creating more white blood cells. The action of hugging reduces the risk of suffering from early dementia by balancing the nervous system. Hugging reduces blood pressure… and all the effects noted above. If you are looking for more evidence on the effects of positive touch and hugging, I’ll refer you to Dr. Tiffany Field (professor in the Departments of Pediatrics, Psychology, and Psychiatry at the University of Miami School of Medicine and Director of the Touch Research Institute). Her research is sound and results are well respected. Dr. Field calls touch “the mother of all senses,” and in her 2001 book, “Touch,” she argues that American society was already dangerously touch deprived, long before the coronavirus exacerbated it. When New York Times journalist Maham Hasan asked people asked “what specific touch they missed the most, the answer was identical for everyone I interviewed: hugs.” Social Media, mask wearing (absence of facial cues), and physical or social distancing makes it challenging to cope without hugs because we are “hard-wired” to be social. There will no doubt be challenging consequences as a result of human sensory deprivation, and the long-term effects will take some time to fully understand. When one is feeling safe and comfortable to reach out towards others with a kind and tender embrace, it’s still always wise to “ask first.”

“The most depressing day of the year will be on this date” (Jan 6, 2026)

“What Is National Hugging Day? History and Origins” Newsweek (Jan 21, 2022)

“National Hugging Day 2021: 8 Amazing Health Benefits Of Giving, Receiving Hugs” (Jan 21, 2021)

“Can Hugging be Good for Your Health?” (Dec 31, 2021)“

“Celebrate National Hug Day By Experiencing The Health Benefits Of A Warm Embrace” (Jan 20, 2015)

“The Science of Hugging: You May Think Yourself a Good Hugger, but does Science Agree?” (Dec 17, 2021)

“Can Hugs Make Your Child Smarter?” (Jan 4, 2022)

“10 Reasons Hugging is Good for Us” (Jan 21, 2017)

“Is a cuddle better than sex? Don’t panic if the passion is gone. New research says it’s hugs not hanky-panky that keeps couples together” (July 25, 2011)

“11 Interesting Effects of Oxytocin” (May 30, 2013)

“The Psychological Benefits of Hugs” (Nov 5, 2019)

“What All That Touch Deprivation Is Doing to Us? It’s going to be a while before we can hug freely again. What does that mean for our mental health?” (Oct 6, 2020)