Companion Dog Chronic Stress and Immune Function

Chronic psychological stress in dogs impairs immune function and accelerates aging - welfare management has physical health consequences.

Key Facts

Chronic stress activates the HPA axis causing sustained cortisol elevation
Elevated cortisol impairs immune function, increases inflammation, and accelerates cellular aging
Dogs in chronically stressful environments show higher rates of infection and slower wound healing
Chronic stress is associated with shorter telomere length - a marker of biological aging
Sources of chronic stress include conflict with other dogs, inadequate exercise, and owner anxiety
Addressing psychological welfare has measurable physical health benefits beyond immediate comfort

Welfare Considerations

Chronic psychological stress causes physical health harm in dogs that accumulates over time. Dogs in stressful environments age faster at the cellular level and are more susceptible to infection. This biological link between psychological and physical welfare means addressing stress sources is not just an emotional welfare concern but a medical one.

What You Can Do

Assess your dog's environment regularly for sources of chronic stress
Address inter-dog conflict in multi-dog households proactively rather than hoping it resolves
Ensure adequate exercise, mental stimulation, and positive social interaction for all dogs
Consult a veterinary behaviourist for dogs showing chronic anxiety or stress
Advocate for routine welfare assessment including psychological welfare at veterinary consultations