You walk into the kitchen and can't remember why. You meet an old colleague and the name just won't come. You put your glasses down somewhere and spend ten minutes looking for them.
Moments like these are common, and most of the time they're nothing to worry about. But when you're getting older, or watching a parent get older, it's natural to wonder: is this normal, or is it the start of something more?
This guide explains how memory typically changes with age, the signs that suggest something else is going on, common treatable causes of forgetfulness, and when to talk to a doctor.
How Memory Changes With Age
Some changes in memory and thinking are a normal part of getting older. Many people notice that:
it takes a little longer to learn new things or recall information
names come to mind more slowly
multitasking feels harder than it used to
they occasionally misplace things or forget an appointment
The key features of normal age-related changes are that they're occasional, they don't disrupt daily life, and the person can usually work it out or remember later.
Dementia is different. The World Health Organization is clear that while dementia becomes more common with age, it is not a normal part of ageing. It's caused by diseases and injuries that affect the brain.
Normal Forgetfulness vs Signs to Take Seriously
Here are some common comparisons. None of these alone is a diagnosis, but they can help you think about what you're seeing.
Forgetting names
Usually normal: forgetting the name of an acquaintance and remembering it later.
Worth checking: regularly forgetting the names of close family or friends.
Missing appointments
Usually normal: occasionally forgetting an appointment, then remembering.
Worth checking: frequently missing appointments and having no memory of them being arranged.
Losing things
Usually normal: misplacing keys and finding them by retracing steps.
Worth checking: putting things in unusual places and being unable to retrace steps, or believing someone has taken them.
Conversations
Usually normal: forgetting part of a conversation from weeks ago.
Worth checking: forgetting a conversation from earlier the same day, or repeating the same question several times.
Finding words
Usually normal: occasionally searching for the right word.
Worth checking: frequently losing words, substituting odd words, or losing track mid-sentence.
Time and place
Usually normal: briefly forgetting what day it is and working it out.
Worth checking: getting lost in familiar places or losing track of the season or year.
Everyday tasks
Usually normal: occasionally needing help with a new gadget.
Worth checking: struggling with familiar tasks like following a recipe, paying bills or using a phone they've used for years.
For a fuller list, see our early signs of dementia checklist.
Why Recent Memories Go First
In dementia, recent memories are often affected first, while older memories may stay clearer for longer. The Alzheimer's Society explains that when someone with dementia forgets a recent conversation, it can be because their brain didn't store the information in the first place.
That's why someone might tell a vivid story from 1965 but not remember what they had for breakfast. It's also why "I already told you" doesn't help. The memory may simply not be there.
The Middle Ground: Mild Cognitive Impairment
Between normal ageing and dementia sits mild cognitive impairment (MCI). People with MCI have memory or thinking problems that are noticeable to them or others, and show up on tests, but they can still manage everyday life independently.
MCI doesn't always progress to dementia. For some people it stays the same, and for some it improves, particularly if there's a treatable cause. Our guides to understanding mild cognitive impairment and staying independent with MCI go into more detail.
Common Treatable Causes of Forgetfulness
Not all memory problems are dementia. Some are caused by things that can be treated or improved:
Poor sleep, including sleep apnoea
Depression, anxiety and stress
Medication side effects or interactions, especially when several medicines are taken together
Infections, including urinary tract infections in older adults
Thyroid problems or vitamin deficiencies
Dehydration
Hearing or vision loss, which make it harder to take in information
Alcohol
One important warning: memory problems or confusion that come on suddenly, over hours or days, are not typical of dementia and may be delirium, which needs urgent medical attention. See our guide to sudden confusion in seniors.
It's hard to tell a one-off from a pattern when you're relying on memory. Elli Cares daily check-ins let someone record how they're feeling, family in the care circle can add observational notes, and the activity log shows how routines and reminders are going over time. A downloadable report brings that together for a doctor's appointment. Elli doesn't diagnose anything, but it helps turn "I think things have been worse lately" into something more concrete.
When to See a Doctor
Talk to a doctor if memory changes are:
happening more often or getting worse over time
affecting daily life, work, finances or safety
noticed by family and friends, not just the person themselves
accompanied by changes in mood, personality or behaviour
sudden, in which case seek help urgently
Early assessment helps. It can identify treatable causes, provide a clearer diagnosis, open access to treatments and support, and give people time to plan. Our step-by-step guide to memory assessments explains what to expect. If you're worried about a loved one, our guide to recognising and addressing early signs can help with that conversation.
What You Can Do for Your Memory Now
Some of the most effective steps for brain health are also good for everything else. The 2024 Lancet Commission on dementia identified 14 potentially modifiable risk factors, including physical inactivity, hearing loss, high blood pressure, social isolation, depression and untreated vision loss.
Practical steps include:
staying physically active. Our guide to daily walks for brain health is a good start
getting hearing and eyesight checked
managing blood pressure, cholesterol and diabetes
staying socially connected
sleeping well
using simple memory aids: one calendar, one place for keys, reminders for regular tasks
Our five brain health tips for ageing cover more.
Frequently Asked Questions
Is it normal to forget things as you get older?
Yes, occasional forgetfulness, like misplacing keys or taking longer to recall a name, is common with age. Memory loss that disrupts daily life is not a normal part of ageing.
What's the difference between memory loss and dementia?
Memory loss is a symptom. Dementia is a condition that affects memory and other thinking skills enough to interfere with daily life, and it's caused by diseases that affect the brain.
Can memory loss be reversed?
Sometimes. Memory problems caused by things like medication side effects, depression, poor sleep, infections or vitamin deficiencies can improve with treatment.
When should I worry about memory loss?
When it's frequent, getting worse, affecting daily life, noticed by others, or comes on suddenly.
Pay Attention, Without Panicking
Most memory slips are just that. But patterns are worth noticing, and asking a doctor is never an overreaction. To see how Elli helps families keep track of everyday wellbeing, visit our Seniors and Families page.
