Medically reviewed by Dr Richard Bowskill, consultant psychiatrist
Published: 20 August 2026 · Last reviewed: 20 August 2026
Stress, anxiety and depression can all cause genuine memory problems, and in adults they are among the most common and most treatable causes. Memory difficulty does not automatically mean dementia. If you are forgetting appointments, losing your thread mid-sentence, or struggling to hold on to information, low mood and chronic stress are very often part of the picture.
The usual mechanism is attention, not damage. When you are anxious, stressed or low, your mind is preoccupied and your stress hormones are raised, so information never gets properly taken in or filed. What feels like forgetting is often information that was never fully encoded, because your attention was somewhere else.
A useful first step is to notice whether the problem is taking in new information and concentrating, which points towards stress or mood, or losing well-established memories and skills, which is more of a reason to be checked. If memory changes are affecting your daily life, getting worse, or worrying you, see your GP, and a memory assessment can help clarify what is going on.
Below we explain how stress and mood affect memory, how to tell concentration problems from memory loss, when changes are worth checking, and what a memory assessment actually involves.
Can stress, anxiety or depression cause memory problems?
Yes. Stress, anxiety and depression are common, treatable causes of memory problems, working mainly by disrupting attention and the brain’s stress-hormone balance rather than by damaging it.
When you are under sustained pressure, your body keeps cortisol and adrenaline high. These affect the hippocampus and prefrontal cortex, the regions that handle working memory and lay down new memories, so recall and concentration suffer. Depression tends to slow thinking and flatten motivation, which makes information harder to take in and retrieve. The NHS lists stress, anxiety and depression, along with sleep problems, as common and treatable causes of memory loss. The encouraging part is that when the underlying stress or mood improves, memory usually improves with it.
Is it your memory, or your concentration?
Often it is concentration, not memory. Anxiety and low mood make it hard to focus, so information is never properly taken in, which feels like forgetting but is really a problem of attention.
Think of the times you have walked into a room and forgotten why, or read the same paragraph three times, or blanked on a familiar name under pressure. These are attention lapses, and they are far more common in stress, anxiety, poor sleep and depression than in any disease. A helpful clue is that concentration-related lapses tend to come and go with how you are feeling, and improve when you are relaxed or well rested. Memory changes that are steady, progressive, and involve losing information you once held securely are a different pattern, and the next section covers when those are worth checking.
When are memory changes worth getting checked?
Get checked when memory changes disrupt daily life, keep getting worse, involve losing familiar words or skills, or simply worry you, at any age, not only in later life.
Occasional forgetfulness is normal, especially when you are busy or stressed. The signs that warrant a professional look include repeatedly asking the same questions, struggling to follow conversations, getting lost in familiar places, or family noticing a change you had not. You do not have to be older to seek help, and you do not have to wait until things are severe. If low mood is part of the picture and you are finding it hard to cope, you do not need to manage alone: contact your GP, call NHS 111, or call the Samaritans free on 116 123.
What does a memory assessment involve?
A memory assessment is a structured evaluation of your memory, thinking and mood, used to find the cause, whether that is stress, low mood, sleep, or something that needs further tests.
It usually combines a detailed history, short cognitive tasks, and a check of your mood and general health, sometimes with blood tests or a scan where indicated. Its real value is clarity: it can identify treatable contributors like depression, anxiety or sleep problems, offer reassurance where memory is intact, and flag anything that needs closer attention. Our memory assessment is led by consultant psychiatrists, in Brighton or online. If low mood or stress turns out to be driving your symptoms, our post on brain fog and mental health and our guide to how CBT helps with depression and anxiety explain what can help.
Common questions
Yes. Anxiety and depression are common, treatable causes of memory difficulty. They work mainly by disrupting attention and concentration and by raising stress hormones, so information is not properly taken in. Memory usually improves once the underlying anxiety or low mood is treated.
Yes. Sustained stress keeps cortisol high, which affects the brain regions responsible for working memory and forming new memories. This makes it harder to concentrate and recall things. It is typically reversible, and memory tends to recover as stress levels come down.
No. Most memory problems, especially in younger and middle-aged adults, are caused by stress, anxiety, depression, poor sleep or being overloaded, not dementia. A memory assessment can tell the difference and identify treatable causes, which is exactly why getting checked is worthwhile.
Be guided by impact and pattern. Lapses that come and go with stress or tiredness are usually benign. Changes that steadily worsen, disrupt daily life, or involve losing familiar words, skills or places are worth checking, and it is always reasonable to seek reassurance.
Yes, if memory problems are affecting your life or worrying you. Memory assessments are not only for older adults. In younger people they often identify treatable causes such as stress, anxiety, depression or sleep problems, and provide clarity and reassurance.
About the reviewer
This article was medically reviewed by Dr Richard Bowskill, a consultant psychiatrist and co-founder of Flint Healthcare, GMC-registered and a member of the Royal College of Psychiatrists, with many years of experience assessing mood, anxiety and cognitive concerns in Brighton and online.
Make an appointment
If memory problems are worrying you, you do not have to figure it out alone. You can make an appointment with our team in Brighton or online, and we will help you understand what is going on and what would help.
