Blood Pressure and Stress
One of the main causes of high blood pressure is stress. So it makes sense to avoid stress where possible or if you can't avoid it to learn techniques to reduce or relieve it. The better your body learns to handle stress or process its effects, the smaller the rise in blood pressure will be during stressful situations.
What is stress?
Stress is the body's reaction to strain or pressure. That's why it's important to avoid extreme stress whenever you can.
Stress from exercise
If an untrained body is pushed to its limits, it responds with stress. Blood pressure rises because the blood vessels are put under unfamiliar strain, and values can reach dangerous levels. That's why it's important to build up exercise slowly. Light aerobic exercise under medical supervision can support drug treatment.
White coat effect
Do you arrive at the doctor's office out of breath, maybe after walking up to the second floor, and does the visit itself make you a bit nervous? It's understandable that your measured blood pressure may be higher than usual. That's why doctors often tell patients to sit quietly for a few minutes so the heart rate can settle. Worrying that the reading will be too high, fear of blood tests, or general anxiety about seeing the doctor (the white coat effect) can make the blood pressure reading higher than it would be at home in a familiar environment.
How does stress affect you?
Under stress, not only does blood pressure rise. The increase in blood pressure during stress and the other bodily reactions are natural responses. Our ancestors experienced stress when they felt threatened. To react quickly, the body releases adrenaline this increases heart rate, causes faster and deeper breathing, and redirects blood to the brain and large muscle groups: now it's possible to fight or flee. If stress continues or recurs soon after, the body can't bring adrenaline levels back down to normal. The heightened alert state with elevated blood pressure can then persist and, with ongoing stress, become chronic. In addition to adrenaline, other hormones like cortisol (which narrows blood vessels in the brain to get oxygen there faster) and growth hormones are released; these stabilize metabolism or suppress certain body functions (like pain perception or digestion) that aren't helpful in a stressful situation.
Increased glucose release raises blood sugar to supply the muscles with energy. The higher blood sugar triggers the pancreas to release insulin. Insulin brings the blood sugar down, and afterwards you may feel hungry which is why people often eat too much when stressed. At the same time, digestion is suppressed, so the food isn't properly used. That can disrupt the gut's bacterial flora and lead to poor nutrient absorption. Constantly elevated blood sugar can lead to diabetes, which brings further consequences. Increased muscle tension often causes headaches and neck pain. Long-term effects can include digestive problems or even impotence.
Chronically high blood pressure can damage the heart and blood vessels as well as other organs. The hormones adrenaline and cortisol and growth hormones also interfere with proper insulin release, because the muscles need the available sugar. But if the muscles aren't used since modern life rarely involves fight or flight these hormones remain in the body and impair insulin production, which can lead to diabetes. Cardiovascular problems are the most common late effects of ongoing stress. Other side effects of too much cortisol include its anti-inflammatory properties. If there are no infections or inflammation, antibody production is reduced. When common pathogens like cold bacteria or flu viruses appear, a stressed person is much more susceptible than someone who is balanced.
Even with a low-salt diet (which is recommended to lower blood pressure), some metabolic values can dangerously increase. For example, rises in the stress-related hormones renin, aldosterone, adrenaline and noradrenaline have been observed. So when reducing salt in the diet, it's important to find a sensible middle ground.
Sources:
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This article comes from BloodPressureDB – the leading app since 2011 that helps hundreds of thousands of people monitor their blood pressure every day.
Our content is based on carefully researched, evidence-based information and is continuously updated (as of 01/2026).
Author Sabine Croci is a certified medical assistant with many years of experience in internal medicine and cardiology practices as well as in outpatient care. Since 2015 she has led the editorial team at BloodPressureDB. With additional qualifications as a paramedic, first responder, and training in various therapy and emergency areas, she provides well-founded, practical, and reliably reviewed information.
Author Sabine Croci is a certified medical assistant with many years of experience in internal medicine and cardiology practices as well as in outpatient care. Since 2015 she has led the editorial team at BloodPressureDB. With additional qualifications as a paramedic, first responder, and training in various therapy and emergency areas, she provides well-founded, practical, and reliably reviewed information.
