Companion Animals

Companion Cat Stress and Immune Function

Chronic stress in cats suppresses immune function and increases susceptibility to infectious and inflammatory diseases.

Key Facts

Chronic stress elevates cortisol which suppresses lymphocyte activity
Stress-induced immunosuppression is linked to herpesvirus reactivation in cats
Environmental stressors including multi-cat conflict and unpredictable routine reduce immune competence
Stable environments with predictable positive interactions maintain immune health

Welfare Considerations

The link between chronic stress and immune suppression means that environmental welfare directly affects physical health in cats. Cats in chronically stressful environments are more susceptible to infectious diseases and have slower recovery times. Welfare improvement through stress reduction has direct physical health benefits.

What You Can Do

Maintain stable routines and predictable positive interactions for cats
Provide adequate resources including litter boxes, food, and resting spots to reduce inter-cat competition
Create opportunities for choice and control in daily cat environments
Consult a feline behaviorist for multi-cat households with conflict