Stress and health: how tension affects the body and what helps
Stress
Key points
- The stress response is helpful in the short term; harm comes when it continues without recovery.
- Chronic stress is linked to blood pressure, metabolism, sleep and immunity.
- Mindfulness meditation programs modestly reduce anxiety, depression and pain.
- Breathing practices reduce self-reported stress; the effect is small to moderate.
What stress looks like in the body
When we face a threat or challenge, the brain triggers the stress response: adrenaline and cortisol are released, the heart beats faster, blood pressure rises and energy is mobilized. It is an ancient survival mechanism, and in the short term it is useful.
When stress becomes harmful
Neuroendocrinologist Bruce McEwen described allostatic load, the “price” the body pays for long-lasting or repeated activation of stress systems (McEwen, 1998). If the stress response switches on too often, lasts too long or does not switch off once the threat has passed, over time it may contribute to:
- higher blood pressure and cardiovascular risk;
- metabolic changes and fat gain around the abdomen;
- disrupted sleep;
- weaker immune responses;
- poorer memory and mood.
In the American Psychological Association’s annual Stress in America surveys, a large share of adults report that stress affects their physical or mental health. Learning to recover is not a luxury; it is a basic health skill.
What helps: the research
Mindfulness meditation. A systematic review of 47 randomized trials with more than 3,500 participants found that mindfulness meditation programs modestly reduced anxiety, depression and pain. The quality of evidence was rated moderate (Goyal et al., 2014).
Breathing practices. A meta-analysis of randomized trials found that breathwork reduced self-reported stress compared with control conditions, although the effect was small to moderate (Fincham et al., 2023). Read more in our article on breathing techniques.
The other pillars. Physical activity, good sleep and social support are powerful buffers against stress. Lifestyle medicine looks at them together because they reinforce one another.
Everyday “stress hygiene”
- Notice your body’s signals: a clenched jaw, raised shoulders, shallow breathing.
- Micro-breaks: 1 to 2 minutes of slow breathing several times a day.
- Move: even a 10-minute walk eases tension.
- Limit the news: pick one or two set times a day to check it.
- Talk: share what you are going through with someone you trust.
- Do what refills you: hobbies, nature, music, faith, creativity.
When to get professional help
Self-help is useful, but it does not replace psychological or psychiatric care when symptoms are severe or lasting. Reaching out to a professional is a sign of self-care, not weakness. You can find treatment options through your doctor or the SAMHSA National Helpline (1-800-662-4357), which is free and confidential.
Frequently asked questions
Is all stress bad for you?
No. Short-term stress mobilizes resources and boosts focus and energy. Harm comes when tension lasts a long time and there is no time to recover.
What lowers tension fastest?
Slow breathing, a short walk or talking to someone you trust. For long-term benefit, regular practices matter: activity, sleep, support and mindfulness techniques.
Is meditation proven to work?
A systematic review in JAMA Internal Medicine found moderate-quality evidence that mindfulness meditation programs reduce anxiety, depression and pain. It is not a magic cure, but it is a useful tool.
Sources
- McEwen (1998). Protective and Damaging Effects of Stress Mediators. New England Journal of Medicine 338(3):171-179. doi:10.1056/NEJM199801153380307
- Goyal et al. (2014). Meditation Programs for Psychological Stress and Well-being. JAMA Internal Medicine 174(3):357. doi:10.1001/jamainternmed.2013.13018
- Fincham et al. (2023). Effect of breathwork on stress and mental health: A meta-analysis of randomised-controlled trials. Scientific Reports 13(1). doi:10.1038/s41598-022-27247-y
Keep reading
Stress Breathing exercises for stress: what works according to research
What a meta-analysis of breathwork trials found, how slow breathing and cyclic sighing affect mood, and three simple techniques to try.
Stress News and anxiety: how to stay informed without burning out
Why hours of distressing news coverage are linked to acute stress, what studies found after the Boston Marathon bombing and COVID-19, and rules for healthy news habits.
Stress Nature as medicine: how much time outdoors you need
What studies show about green spaces, cortisol and blood pressure, why 120 minutes a week in nature is a useful target and how to get your dose.
Stress tools
PHQ-9: depression screening questionnaire
9 questions about your mood over the past 2 weeks, one of the most widely used screening tools in the world.
QuizGAD-7: anxiety screening questionnaire
7 questions about anxiety over the past 2 weeks.
QuizWHO-5 Well-Being Index
5 statements about how you have been feeling over the past 2 weeks.
PDF · TrackerMonthly mood, energy and sleep tracker
Rate your mood, energy, anxiety and sleep daily on a 1–5 scale.
PDF · CardBreathing techniques card
Step-by-step instructions for cyclic sighing, slow breathing and box breathing.
PDF · CardProgressive muscle relaxation: step by step
A guide to 9 muscle groups to practice before bed.