The Stress-Immunity Connection
When you’re stressed, your body releases cortisol. Short-term, this is helpful. But chronic elevation suppresses immune function by reducing lymphocyte production (white blood cells that fight infection).
How Chronic Stress Affects Immunity
- Reduces number of natural killer cells by up to 50%
- Decreases antibody production
- Slows wound healing by 40%
- Increases susceptibility to viral infections
- Reactivates latent viruses like cold sores and shingles
Stress-Reducing Immune Boosters
Meditation: 20 minutes daily reduces cortisol and increases antibody response.
Exercise: Moderate exercise boosts immunity. But excessive intense exercise temporarily suppresses it.
Sleep: During sleep, your immune system produces cytokines — proteins that fight infection.
Social Connection: People with strong social ties have stronger immune responses.
