Cuddling and hugging have far more impact than just emotional comfort — they can meaningfully enhance our overall well-being by stimulating the release of oxytocin, often referred to as the body’s natural “feel-good” hormone. Oxytocin is deeply involved in creating emotional bonds: when we embrace someone we care about, it generates a reassuring connection, reduces feelings of loneliness, and fosters a sense of psychological safety.

Scientific evidence supports the idea that hugging helps alleviate symptoms of depression as well. By physically connecting in this way, we signal intimacy and support, and oxytocin helps regulate mood. At the same time, hugging triggers a decrease in cortisol, the stress hormone, which can reduce both subjective anxiety and physiological stress responses. In a randomized controlled trial, researchers measured cortisol levels in participants who either received a hug, practiced self-soothing touch, or performed a neutral task. Both hugging and self-touch significantly lowered cortisol after exposure to a stressful situation. PMC+1

Lowering cortisol has broad implications—not just for how we feel mentally but also for our physical health. Chronic stress and elevated cortisol are known to impair immune function. When hugs reduce cortisol, they help mitigate these negative effects, thereby strengthening the body’s ability to respond to infections. vailhealth.org+2gvhc.org+2 According to a study highlighted by the Cleveland Clinic, for example, women in romantic relationships who shared regular hugs showed lower stress levels — and these kinds of simple, affectionate interactions seem to act as a natural buffer against stress. Cleveland Clinic

In addition, hugging appears to promote cardiovascular health. Research indicates that frequent, warm physical contact (such as a 20-second hug) is associated with lower blood pressure and reduced heart rate. The Berkeley Well-Being Institute+2A Healthier Michigan+2 This effect likely stems from the combined action of the parasympathetic nervous system (the “rest-and-digest” branch of our autonomic nervous system) being activated by touch, and the calming influence of oxytocin. MedicineNet

Beyond stress reduction and cardiovascular benefits, hugging can strengthen our immune defences in more specific ways. One strand of research suggests that physical pressure during a hug might stimulate the thymus gland, which plays a role in regulating white blood cells, important for immune function. nnc.gov.ph+1 In a striking study from Carnegie Mellon University, over 400 people were exposed to a common cold virus: those who reported receiving more hugs in the two weeks before exposure were not only less likely to become ill, but if they did catch a cold, their symptoms were less severe. gvhc.org+1

In short, the simple act of cuddling or hugging is far more than a warm gesture — it is a biologically powerful way to support both mental and physical health. Through the release of oxytocin, reduction in cortisol, and activation of parasympathetic pathways, hugging fosters emotional resilience, helps calm anxiety, and boosts immune function. Even small, consistent moments of closeness — whether with a partner, family member, or friend — can yield meaningful well-being benefits.