What causes anxiety?
Anxiety is one of the most common psychological symptoms, but what causes anxiety? The question is natural, since the causes of anxiety can be many and intertwined. Sometimes there’s a clear life change or burdensome situation in the background, but at other times anxiety seems to appear out of nowhere without a single clear explanation. In this article, we go through the key causes of anxiety comprehensively: biological, psychological, social, and lifestyle-related factors.
Biological causes of anxiety
The functioning of our body significantly affects how easily we experience anxiety. Biological factors create the foundation on top of which other causes are built.
Heredity and brain function
Research shows that susceptibility to anxiety is partly hereditary. Behind anxiety disorders is often a genetic susceptibility, which together with environmental factors can trigger symptoms. The amygdala in the brain, which processes threats and fear, can function overactively, which makes the body react strongly to situations that aren’t actually dangerous.
The balance of neurotransmitters such as serotonin and norepinephrine also matters. When the function of these substances is disturbed, anxiety symptoms can intensify or become prolonged.
Hormonal changes
Fluctuations in hormonal balance can significantly increase sensitivity to anxiety. Menopause in particular can bring depression and anxiety as estrogen levels decline. Anxiety related to menopause is common, and many experience strong anxiety for the first time in their life during this stage.
Thyroid disorders, hormonal fluctuations related to the menstrual cycle, and pregnancy can also predispose to anxiety. If anxiety has started suddenly without a clear psychological cause, it’s a good idea to also have hormone levels and thyroid values checked.
Physical illnesses and anxiety
Many physical illnesses can cause or worsen anxiety. Heart arrhythmias, asthma, diabetes, and chronic pain conditions are examples of conditions that often involve anxiety. The mind-body connection is strong: long-term physical illness also burdens psychological well-being. On the other hand, the physical symptoms of anxiety, such as heart palpitations and shortness of breath, can lead to fear of a serious illness, which in turn feeds the anxiety cycle.
Psychological factors behind anxiety
Mind and thinking patterns play a key role in how we interpret our environment and how easily we become anxious.
Thinking patterns and ways of interpreting
A tendency to interpret situations as threatening, catastrophic thinking, and excessive worry effectively maintain anxiety. If the mind automatically gravitates toward the worst possible outcome, the body reacts as if the threat were real. Constant anxiety often relates to such automated thinking patterns that have developed over a long period of time.
Perfectionism and a strong performance orientation are also known maintainers of anxiety. When the bar for acceptable performance is constantly too high, fear of failure and feelings of inadequacy grow.
Traumatic experiences
Difficult experiences from the past, such as childhood insecurity, abuse, bullying, or losses, leave their mark on the nervous system. A traumatized nervous system can remain in a hyperaroused state where body and mind are constantly on guard. This partly explains unexplained anxiety: the body remembers, even if the mind doesn’t always connect the current state to past events.
Self-esteem and anxiety
Low self-esteem and anxiety often go hand in hand. When confidence in one’s own ability to cope is shaky, new situations and challenges feel threatening. The connection between anxiety and low self-esteem has been confirmed strong in research, and treating one often helps the other.
Life situation and social factors
Daily circumstances and relationships continuously shape our psychological well-being.
Stress and load
Prolonged stress is one of the most common triggers of anxiety. When the load exceeds your recovery capacity week after week, anxiety is the body’s way of signaling that a limit has been reached. Work-related anxiety is a growing phenomenon, and many recognize their anxiety symptoms for the first time specifically in connection with work load.
How then does anxiety differ from stress? Stress is usually a reaction to a specific external factor and eases when the load decreases. Anxiety, on the other hand, can continue even when the stress factor has already been removed, and it often feels more vague and all-encompassing.
Life changes and losses
Major life changes, including positive ones, can trigger anxiety. Moving, changing jobs, divorce, losing a loved one, or the birth of a child are all situations where familiar daily life changes and uncertainty grows. When the basic structures of life waver, a feeling of insecurity is a natural reaction.
Loneliness and social isolation
Humans are social beings, and a lack of social connections has been shown by research to increase the risk of anxiety. Loneliness can also feed negative thought spirals, when there’s no counterweight to thoughts from the company of other people. Social support is one of the most important protective factors for mental health.
Lifestyle and substances as causes of anxiety
Daily choices affect sensitivity to anxiety more than is often thought. Some lifestyle factors can directly trigger or maintain anxiety.
Hangover and anxiety
Hangover anxiety is a phenomenon many recognize. Alcohol affects the brain’s GABA and glutamate systems, and when alcohol’s calming effect fades, the nervous system overcompensates: the heart pounds, thoughts circle, and the feeling is painfully anxious. The phenomenon is also called “hangxiety,” and it can be especially strong if you have a tendency toward anxiety in general.
Long-term alcohol use and anxiety
Regular alcohol use changes brain chemistry more permanently. At first alcohol relieves anxiety, but in the long term it significantly worsens it. Stopping alcohol can initially increase anxiety as the nervous system adapts to the new situation, but after a few weeks many notice anxiety clearly easing. Alcohol is one of the most significant maintainers of anxiety.
Sleep, nutrition, and exercise
Sleep deprivation is an effective amplifier of anxiety. Even one poorly slept night can significantly increase sensitivity to anxiety, and long-term sleep deprivation disturbs the brain’s ability to regulate emotions. Similarly, irregular eating, excessive caffeine use, and physical inactivity can all increase anxiety symptoms.
Regular exercise, on the other hand, has been shown by research to be one of the most effective ways to reduce anxiety. Exercise releases endorphins, improves sleep, and helps release stress hormones from the body.
What causes unexplained anxiety?
Sometimes anxiety feels completely unexplained. Life is going well externally, nothing special has happened, and yet inside there’s constant restlessness and anxiety. What does anxiety tell us then?
Unexplained anxiety can result from several overlapping factors that individually feel small but together exceed your tolerance. Behind it can also be unconscious emotions, unprocessed experiences, or long-running mild load that has accumulated unnoticed.
Internal bodily factors such as hormonal changes, gut microbiome disorders, or low-grade inflammation can also cause anxiety without a clear psychological cause. That’s exactly why a holistic approach is important: the causes of anxiety are worth examining through mind, body, and life situation.
Need help with anxiety? Get to know Aichologist.
Why is recognizing the causes of anxiety important?
When you understand what causes your anxiety, it’s easier to relate to it and easier to start easing it. Recognizing the causes doesn’t mean you have to find one single explanation. Most often there’s a combination of several factors behind anxiety.
Recognizing your own anxiety triggers helps you make targeted changes: if sleep deprivation is in the background, sleep better; if stress is a burden, evaluate workload; if alcohol worsens how you feel, try a break. Even small changes can have a significant effect.
If you want to safely explore your own causes of anxiety, the Aichologist app offers an opportunity to discuss anxiety and its background factors with an AI psychologist, at your own pace and from your own home. Read more about anxiety in general and take the first step toward better well-being.
