The Science

Human-animal interaction has been associated with reductions in physiological stress markers, including salivary cortisol, blood pressure and heart rate, alongside increases in oxytocin, a neuropeptide linked to social bonding and stress buffering.

In a randomised trial of adolescents, a 12-week equine facilitated learning programme was associated with lower afternoon basal cortisol compared with a waitlist control group, suggesting a possible effect on daily stress regulation.

As prey animals, horses are highly attuned to the behaviour and physiological arousal of those around them. Experimental work has found that horse heart rate and behaviour can shift in response to human stress, and that a handler's attachment style can influence horse behaviour during equine-assisted activities.

This responsiveness is thought to give participants immediate, non-verbal feedback on their own emotional state, a proposed mechanism for building self-awareness and emotional regulation.

A randomised controlled trial of 116 children and adolescents with autism found that 10 weeks of therapeutic horseback riding produced significant improvements in irritability and hyperactivity, and gains in social cognition, social communication and word fluency compared with a barn activity control.

Systematic reviews report generally positive effects on social functioning and behaviour, while noting small samples and variable study quality across the field.

A pilot study of adults exposed to trauma found reductions in post-traumatic stress symptoms, anxiety and depression following a six-week equine-assisted programme. Work with military veterans has reported similar reductions in PTSD symptoms after therapeutic riding.

Clinicians suggest the horse acts as a non-judgemental third party, allowing relational safety to develop without the direct interpersonal demand of talk-based approaches.

Equine-assisted activities with adolescents have been associated with improvements in perceived social support and self-efficacy, particularly in programmes emphasising relationship building and care of the horse.

A systematic review of psychological outcomes found consistent positive trends across self-concept, behaviour and wellbeing, while calling for larger controlled studies.

Slow breathing (around six breaths per minute) is associated with increased heart rate variability and parasympathetic activity, with reported reductions in anxiety and arousal. Mindfulness-based stress reduction shows moderate effects on stress, anxiety and quality of life in healthy adults.

Greenspace exposure is associated with lower salivary cortisol and heart rate, and caring touch is linked to stress reduction. Early research on Havening, a self-applied touch technique, reported reduced distress after a single session, though the evidence base is small.