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Stress Guide · Causes

Causes of psychological stress

Reviewed by: Dr. Mahmoud El-Sawy Last updated: October 1, 2026 6-minute read
The short answer

The causes of stress arise from a meeting between a difficult circumstance and resources we feel are not enough to face it. The best-known sources are work, money, housing, relationships, exams, illness, and big changes, even positive ones. How much a person is affected is shaped by personal factors such as genes, upbringing, past experiences, thinking style and having support.

  • The same situation may exhaust one person and not bother another.
  • A pile-up of small problems at the same time can be enough to cause acute stress.
  • Lack of sleep, stimulants and substances lower the body's capacity to cope.

How does stress arise?

Stress arises from the gap between the event and the person, and neither alone is enough to explain it. The UK's National Health Service puts it simply: feeling stressed usually happens when we feel we do not have the resources to cope with the challenges in front of us.

That is why two people can go through the same circumstance, such as a delayed salary or a father's illness, and one handles it with relative calm while the other loses sleep and focus. This difference does not make one morally stronger than the other; each entered the situation with a different load, different support and a different history.

What are the most common sources of stress in daily life?

The World Health Organization and the UK's National Health Service group the common sources of stress into similar categories:

Work and study

Unrealistic workloads, an insecure job, interviews, exams and deadlines.

Money and housing

Debt, insufficient income, housing problems or losing a job.

Relationships

Conflicts with family, friends or colleagues, and separation or divorce.

Health

One's own illness, or the illness or death of someone close.

Life changes

Moving to a new home, a new baby, retirement or a new job.

Public crises

Economic crises, pandemics, natural disasters, wars and violence in society.

Infographic: Where does stress come from? Work and study, money and housing, relationships, health, life changes, and public crises: work and study, money and housing, relationships, health, life changes, public crises
Common sources of stress: work and study, money and housing, relationships, health, life changes, and public crises

Cleveland Clinic notes that a pile-up of small problems at the same time, such as traffic, coffee spilled on your clothes and being late for an appointment, can be enough to cause acute stress. You do not need a major disaster to feel exhausted.

Can happy events cause stress?

Yes. Cleveland Clinic counts both getting a new job and losing one as sources of stress, and lists among its causes marriage, having a baby, moving to a new home, retirement, and even going on vacation. Joy does not cancel the effort the body and mind need to adapt to a new situation and new responsibilities, which is why many people are surprised to feel tense in weeks they had long awaited.

Why are some people more affected by stress than others?

The UK's National Health Service notes that causes of stress include our genes, how we were raised, and our experiences in childhood and adulthood. Personal factors show up in:

  • Temperament and predisposition: in some people the nervous system responds to threat faster and more intensely.
  • Early experiences: a review by researcher Rajita Sinha says that early childhood stress, maltreatment and accumulated adversity cause changes in the body's stress-response systems.
  • Thinking patterns: perfectionism, expecting the worst and difficulty tolerating uncertainty magnify the effect of a situation, and overlap greatly with overthinking.
  • Difficulty setting boundaries: accepting every request and taking on others' responsibilities at one's own expense.
  • Lack of support: a person who faces their crises alone carries the whole burden.

What factors weaken your ability to cope with stress?

Some causes come not from outside but from the state and habits of the body, making an ordinary situation feel heavy:

Physical and behavioral factors that reduce resilience to stress
FactorHow it increases stress
Lack of sleepThe World Health Organization says sleep restores the body and mind and helps reverse the effects of stress, and without it we lose that reserve
Stimulants before bedCaffeine in the evening spoils sleep, so the next day starts with a smaller reserve
Following the news for long periodsThe World Health Organization notes that spending a long time following the news on television and social media can increase stress
Chronic illness and painIllness is itself a source of stress, and it reduces the energy available for coping
Substance use and withdrawalSubstances relieve tension temporarily and then leave it higher, and withdrawal symptoms are an added strain on the nervous system

When does a temporary cause become chronic stress?

Stress becomes chronic when its sources continue for weeks and months without breaks, as in prolonged marital problems, work pressure or financial crises, which are examples Cleveland Clinic mentions. The risk rises when several sources combine at once, or when the person is in a role that does not let them stop, such as caring for a sick person at home for years. Over time, stress itself can become the cause of new stress: insomnia weakens performance, which increases work pressure, which increases insomnia.

Could there be another psychological or medical cause behind the stress?

Sometimes what we call “stress” is a symptom of another condition: an anxiety disorder that makes every situation a threat, depression that drains energy so everything feels heavy, an adjustment disorder after a major event, or a physical problem that causes nervousness and insomnia. In the other direction, the World Health Organization says stressful situations can cause mental health conditions or make them worse, the best known being anxiety and depression. So if the tension is out of proportion to the circumstances or does not ease when they pass, a medical assessment is a sensible step.

Has stress turned into danger? Ask for help now

  • Talking about death, wanting to disappear, or being a “burden” on others
  • Severe or crushing chest pain, sudden shortness of breath, or fainting (treat as a heart problem until proven otherwise)
  • Complete inability to sleep, eat or do any task for several days
  • Excessive use of sedatives, or mixing them with alcohol or drugs “to calm the nerves”
  • Fits of anger that reach threats or violence toward oneself or others

Do not leave the person alone. Calmly and frankly ask how they feel and what they are thinking, and listen without blame; asking directly does not plant the idea, it opens the door to help. For chest pain, fainting or any threat to life, call an ambulance (123) immediately. For suicidal thoughts, call an ambulance or take them to the nearest emergency room, or call the mental health support line 16328 (24 hours), and keep medications and anything they could use to hurt themselves away from them.

Ambulance 123 Mental health support line 16328
Frequently asked questions

Frequently asked questions about the causes of stress

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What are the causes of stress?

The best known are work and study pressure, financial and housing problems, conflicts in relationships, illness or the loss of a loved one, and major life changes, along with personal factors such as genes, upbringing, thinking style and lack of support.

Is stress hereditary?

Stress itself is not inherited, but the UK's National Health Service lists genes among the factors that influence it, alongside upbringing and experiences. In other words, predisposition may differ, while coping skills remain learnable.

Why do I feel stressed for no clear reason?

The cause may be an accumulation of small irritations, lack of sleep, too many stimulants, or old stress that was never dealt with. If tension continues for a long time with no cause at all, it may be a pathological anxiety that needs assessment.

Does lack of sleep cause stress?

Lack of sleep weakens the body's and mind's ability to cope with stress, and the World Health Organization says good sleep helps reverse the effects of stress. The relationship runs both ways, since stress in turn spoils sleep.

Do the news and social media increase stress?

They can. The World Health Organization notes that spending a long time following the news on television and social media may increase stress, and advises cutting this time if you notice its effect on you.

Can marriage or a promotion cause stress?

Yes, positive changes such as marriage, a new job or a new baby take effort to adapt to, and Cleveland Clinic counts them as sources of stress just like negative changes.

What are the most common causes of stress at work?

According to the World Health Organization, the best known include unrealistic workloads, an insecure job, and conflicts with colleagues. If work pressure goes on for long without good management, it can end in burnout.

Medical reviewDr. Mahmoud El-Sawy, Consultant Psychiatrist and Addiction Specialist

This page was written by the Eradah editorial team and reviewed by a specialist physician under the medical review policy. Last medically reviewed: October 1, 2026. The content is for education and does not replace consulting a doctor.

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