Updated October 2026 | Reviewed by Chris Berger, M.A., LPC, NCC
Stress is your body's response to an external demand, while anxiety is a persistent feeling of apprehension that can linger with no clear trigger. Both activate the same stress response system, and when that system stays switched on too long, it can affect nearly every process in your body. Both also respond to practical, learnable strategies.
Key takeaways
- Per the National Institute of Mental Health, stress generally is a response to an external cause, while anxiety generally is internal and involves a persistent feeling of apprehension or dread that does not go away.
- The Mayo Clinic warns that when the stress response stays active too long, exposure to cortisol and other stress hormones can disrupt almost all the body's processes.
- Chronic stress is linked to anxiety, depression, trouble with memory and focus, sleep problems, and over time heart disease.
- Short term tools calm your body in the moment; cognitive behavioral strategies and lifestyle changes shift your baseline over the long run.
What is the difference between stress and anxiety?
Stress is your body's response to any demand or threat. When you perceive a challenge, your defenses kick into a rapid, automatic fight or flight response. Anxiety is different: the National Institute of Mental Health describes stress as generally a response to an external cause, such as a big test or an argument, while anxiety generally is internal, a reaction to stress that involves a persistent feeling of apprehension or dread that does not go away even when no threat is in sight. Knowing which one you are dealing with matters, because stress tends to ease when the demand passes, while persistent anxiety deserves its own attention.
What happens inside your body when you are stressed?
When you are stressed, your body releases adrenaline and cortisol, hormones that prepare you to act. In a true emergency they can be life saving. The trouble starts when modern life keeps the alarm switched on. According to the Mayo Clinic, when the stress response system is active for too long, the extra exposure to cortisol and other stress hormones can disrupt almost all the body's processes and puts you at higher risk of many health conditions.
What does chronic stress do to your health?
The Mayo Clinic links ongoing stress to anxiety, depression, and trouble with memory and focus, along with physical effects such as headaches, muscle tension, and digestive problems. Sleep is often the first casualty: stress driven physical symptoms and racing thoughts feed insomnia, and poor sleep in turn makes the next day's stress harder to handle. Over time, chronic stress can raise the heart rate and contribute to heart disease and high blood pressure. None of this is meant to alarm you; it is the case for taking stress management as seriously as any other health habit.
What helps right now?
Breath work and mindfulness. Slow, deliberate breathing and short mindfulness exercises can provide immediate relief in stressful moments by giving your body a signal that the emergency is over.
Movement. A quick walk or stretching session helps discharge the physical side of stress and lifts mood. It does not need to be a workout; ten minutes outside counts. For more on day to day coping, see our guide to navigating stress and anxiety in the modern world.
What helps over the long run?
Sleep routine. A consistent sleep schedule and a restful environment lower your baseline stress more reliably than almost any single technique.
Steady habits. Regular meals, limited caffeine, movement you enjoy, and real social connection all appear on NIMH's list of practical ways to cope. A balanced diet supports the energy and stability that stressful seasons demand.
Cognitive behavioral therapy (CBT). CBT is a well studied approach for stress and anxiety. Working with a licensed therapist, you learn to identify and challenge the thought patterns that keep the alarm ringing and to build coping responses that hold up under pressure.
When should you get professional help?
NIMH's guidance is simple: if you are struggling to cope, or the symptoms of your stress or anxiety will not go away, it may be time to talk to a professional. Therapy is a proven path; anxiety therapy and stress management therapy both start with understanding your specific patterns. Medication is also a treatment some people use for anxiety; that conversation belongs with your physician or a prescribing provider. Foundations provides talk therapy, and the two can work side by side.
Frequently Asked Questions
How can I tell if I have stress or anxiety?
Look at the trigger and the timeline. Stress generally traces to an external cause and eases when that demand passes. Anxiety generally is internal: a persistent feeling of apprehension or dread that hangs on even without a clear threat. If the dread outlasts the deadline, treat it as anxiety.
Can stress really make me physically sick?
Yes. The Mayo Clinic warns that long term activation of the stress response, with ongoing exposure to cortisol and other stress hormones, can disrupt almost all the body's processes, showing up as headaches, muscle tension, digestive trouble, sleep problems, and over time higher cardiovascular risk.
What is the fastest way to calm down in a stressful moment?
Slow your breathing and move. A few minutes of deliberate, extended exhales tells your nervous system the emergency is over, and a short walk burns off the adrenaline already in your system. Neither fixes the stressor, but both return you to a state where you can deal with it.
When does stress or anxiety warrant therapy?
When it persists, interferes with sleep, work, or relationships, or when your usual coping no longer works. NIMH advises that if you are struggling to cope or symptoms will not go away, it is time to talk to a professional. You do not need a crisis or a diagnosis to start.
Clinically reviewed by Chris Berger, M.A., LPC, NCC.
If stress or anxiety ever tips into hopelessness or thoughts of harming yourself, call or text 988, the Suicide and Crisis Lifeline, any time.
Our caring therapists in Fort Collins, Loveland, and Windsor can help you understand your stress and change your relationship with it. Book a free consultation or call 970.227.2770. Your first consultation is free, and most new clients have their first appointment within about 48 hours.
