When the natural stress response goes haywire
The body's stress-response system is usually self-regulating. It decreases hormone levels and enables your body to return to normal once a perceived threat has passed. As adrenaline and cortisol levels drop, your heart rate and blood pressure return to baseline levels, and other systems resume their regular activities.
But when the stressors of your life are always present, leaving you constantly feeling stressed, tense, nervous or on edge, that fight-or-flight reaction stays turned on. The less control you have over potentially stress-inducing events and the more uncertainty they create, the more likely you are to feel stressed. Even the typical day-to-day demands of living can contribute to your body's stress response.
The long-term activation of the stress-response system — and the subsequent overexposure to cortisol and other stress hormones — can disrupt almost all your body's processes. This puts you at increased risk of numerous health problems, including: