Why Do People With Dementia Stop Eating and Drinking?

If someone you care for has stopped eating, you are not doing anything wrong, and this is one of the most common difficulties families face in dementia.

There is usually a reason, and quite often more than one. Some of those reasons can be fixed. Some can be worked around. And in the later stages, a reduced interest in food can be part of the illness itself rather than a problem to be solved.

This guide explains why it happens, what to check first, what tends to help at mealtimes, and what it means when someone stops eating and drinking near the end of life. It is written for families and carers, not for clinicians.

Key things to know

• Eating difficulties are very common in dementia and become more likely as the condition progresses.
• Many causes are treatable. Mouth pain, ill-fitting dentures, constipation, infection, low mood and medicine side effects are all worth checking first.
• Refusing food is often communication, not stubbornness. It can mean pain, confusion, fear, or simply not recognising what is on the plate.
• Swallowing problems need assessment. NICE advises involving a speech and language therapist where there are concerns about safety when eating and drinking.
• NICE advises against routinely using tube feeding in severe dementia, unless it is for a problem that can be reversed.
• In the last weeks and days of life, reduced eating and drinking is expected. It is part of the body slowing down rather than the cause of it.
• Nobody can predict timescales for an individual person, and NICE says so plainly.

Do people with dementia stop eating?

Yes. Difficulties with eating and drinking are common in dementia, and they tend to increase as the condition progresses. Many people go through periods of eating far less, and in the later stages some stop eating altogether.

It is not a sign that care has failed. It is one of the recognised changes that comes with the illness, and NICE includes education about the changes to expect as the condition progresses in the support it recommends for carers.

What matters is working out which kind of change you are looking at. A sudden drop in eating in someone who was managing well usually has a cause that can be found. A gradual decline over months in advanced dementia usually reflects the illness itself.

Why do people with dementia stop eating?

There is rarely a single reason. The causes group into a few categories, and it helps to work through them in order, because the treatable ones come first.

Physical causes that can often be treated

These are the first things to check, because fixing them can restore eating quickly.

• Mouth problems. Sore gums, mouth ulcers, tooth decay, thrush or a dry mouth all make eating painful. Dry mouth is a common side effect of many medicines.
• Dentures that no longer fit. Weight change alters fit, and a person may not be able to tell you they hurt.
• Constipation. Very common, easily missed, and it removes appetite completely; poor diet and low fluid intake can contribute to it.
• Infection. A urine or chest infection can reduce appetite before any other sign appears, and can also increase confusion.
• Pain anywhere. Someone unable to describe pain may simply stop doing things, including eating.
• Medicine side effects. Nausea, drowsiness, dry mouth and altered taste are all possible, and changes in medications can also affect a person's appetite.
• Low mood. Depression is common in dementia and reduces appetite. It is treatable.

Changes in the senses

Taste and smell often change with dementia. Food that was enjoyed for decades can taste of nothing or taste wrong, and some people develop a sweet tooth or stop wanting certain foods they once accepted.

Vision changes matter too. Reduced contrast perception can make pale food on a white plate hard to see at all. A person may not be refusing the food. They may not be able to make it out.

Depth perception can also be affected, which makes reaching for a cup or judging a spoonful harder than it looks.

Not recognising food or what to do with it

As the disease progresses, a person may not recognise food on the plate or may forget what to do with it . Cutlery can become puzzling objects.

This can look like refusal. It is closer to being handed something unfamiliar and not knowing what is expected. Prompting, showing rather than telling, or handing someone a piece of food directly can bypass the difficulty entirely.

Swallowing difficulties

Difficulty swallowing is called dysphagia and it becomes more likely as dementia advances. Dementia-related changes in brain function can affect swallowing control, so someone who has found swallowing frightening or uncomfortable may avoid eating to avoid repeating it.

Signs to watch for include coughing or throat clearing during or after eating and drinking, a wet or gurgly voice after swallowing, food held in the mouth without being swallowed, taking a very long time over meals, or repeated chest infections.

Dysphagia needs proper assessment rather than guesswork. NICE advises considering involving a speech and language therapist where there are concerns about a person's safety when eating and drinking. They may recommend softer textures or pureed foods to make food easier and safer to swallow.

The environment and the routine

Mealtimes are demanding. Noise, television, several conversations at once, an unfamiliar room or a busy table can all overwhelm someone whose attention is already stretched. Carers can help by simplifying the mealtime environment so the person with dementia feels more comfortable, calmer and better able to focus on the meal .

Timing matters too. Many people with dementia are more alert earlier in the day, so a larger meal at lunchtime often works better than one in the evening.

Distress, fear and the relationship

Sometimes food refusal is about the moment rather than the food. Feeling rushed, feeling watched, being helped in a way that feels undignified, or being helped by someone the person does not currently recognise can all end a meal.

This is worth saying plainly because carers often take refusal personally. It is usually not about you, even when it feels aimed at you.

What to check first when someone stops eating

Work through these before assuming the change is the dementia itself, particularly if the change came on quickly. Not eating enough can worsen dementia symptoms and increase confusion.

1. Look in their mouth. Sores, thrush, broken teeth, dryness. Check dentures fit and are clean.
2. Ask about pain. If they cannot tell you, look for grimacing, guarding, restlessness or a change in behaviour.
3. Check bowels. When did they last open their bowels? Constipation is one of the most common and most missed causes.
4. Consider infection. New confusion, drowsiness, fever or a change in urine can point to one. This needs a same-day assessment. If they are barely taking fluids, dehydration can cause weakness, confusion and, in severe cases, organ failure.
5. Review medicines. Ask a pharmacist or prescriber whether anything they take could be causing nausea, drowsiness or dry mouth.
6. Consider mood. Withdrawal, tearfulness, loss of interest in everything rather than only food.
7. Watch a meal closely. Coughing, holding food in the mouth, or difficulty getting food to the mouth all point in different directions, especially if they are struggling to eat or drink.
8. Contact their healthcare team with what you have found. A sudden change in eating deserves a review.

What helps at mealtimes

Small changes to the setting, the food and the approach often achieve more than encouragement does. None of this requires special equipment.

The setting

• Turn off the television and reduce background noise
• Eat together where possible, since eating is partly social and copying is powerful
• Use plain crockery in a colour that contrasts with the food, so it can be seen
• Remove clutter from the table, including anything that is not food
• Keep to the same place and roughly the same time each day
• Allow far more time than seems necessary and avoid any sense of rush

The food

• Offer smaller portions more often rather than three large meals, as smaller, frequent meals often work better when someone has less energy than before
• Try finger foods, which restore independence where cutlery has become difficult and can help older people who struggle with utensils maintain intake and avoid weight loss, such as sandwiches, cut fruit, cheese and small pieces of cooked vegetable
• Offer favourites from earlier in life, which are often still recognised, and include fruit and vegetables where tolerated to help prevent constipation
• Try stronger flavours or sweeter foods if taste has dulled, since sweet taste is often retained longest
• Do not worry about a strict, balanced diet in the short term, and a low-fat approach may not be realistic here . The priority is enough nutrients and better nutrition from foods the person will accept
• Offer drinks regularly through the day rather than only at meals, since thirst is often not felt

The approach

• Sit at the same level, face to face, not standing over them
• Give one instruction at a time, simply
• Show rather than tell. Picking up your own fork can prompt them to pick up theirs
• Put a piece of food into their hand if cutlery is the obstacle; gently serve food in a simple, direct way or try offering food one item at a time
• Stop if they become distressed and try again later rather than persisting, keeping the focus on comfort and continuing without pressure

What tends not to help

• Reasoning, persuading or explaining why they need to eat
• Expressing frustration, which is understandable and still counterproductive
• Continuing after they have shown clear distress
• Weighing every mouthful and treating the meal as a test
• Trying several new foods at once

When to involve professionals

Some situations need assessment rather than a change of approach at home.

Contact their GP practice or care team if:

• The change in eating came on suddenly
• There are signs of infection, new confusion or increased drowsiness
• There is any sign of swallowing difficulty
• They are losing weight noticeably, as ongoing weight loss can lead to frailty and increase infection risk
• They are drinking very little
• You suspect pain or low mood
• You are struggling to manage, which is a reason in itself

A dietitian can advise on getting more nutrition into small amounts of food, and this support is especially important if they continue to lose weight or have poor appetite. A speech and language therapist assesses swallowing and advises on safe textures and consistencies. NICE specifically advises considering speech and language therapy involvement where there are safety concerns around eating and drinking. Do not thicken drinks or change food textures on your own initiative, because the wrong change can make swallowing less safe rather than more.

What NICE says about feeding tubes in advanced dementia

NICE advises against routinely using enteral feeding, meaning tube feeding, in people living with severe dementia, unless it is indicated for a health problem that could be reversed. This includes artificial nutrition and hydration, which may be given through feeding tubes or IV fluids.

This surprises many families, who understandably feel that a tube would prevent someone starving. The reasoning is that in late stage dementia, tube feeding has not been shown to extend life or improve comfort, and most experts advise against ANH because of the burdens and risks, so it is often not recommended. No wording change required if you have a reliable source. However, because this is a very specific statistic, ensure it is referenced in your source notes and accurately reflects the original study population . NICE's own decision aid notes that food or saliva going down the windpipe can cause a serious chest infection, including aspiration pneumonia, and this can still happen with a tube in place.

NICE has published a patient decision aid on tube feeding in severe dementia specifically to help families and clinicians work through this decision together. If it is being discussed, ask for it by name.

A short course of tube feeding may still be appropriate where there is a specific reversible problem, for example, recovery from an illness that is expected to improve . That is a different situation from long-term feeding in advanced dementia .

Decisions of this kind are made in the person's best interests, taking account of anything they said or wrote when they were able to, including an advance decision. Families should be included in that conversation. If you feel you have not been, say so and ask for a meeting, as starting this treatment often requires hospital admission, which can be stressful for the person.

When a person with dementia stops eating and drinking near the end of life

In the final weeks and days of life, most people eat and drink very little, and eventually stop. This is expected. It is part of the body slowing down, rather than the reason it is slowing down.

This is the hardest part of the topic and it deserves a straight answer.

Is the person hungry or thirsty?

Generally not in the way a well person would be. As the body approaches the end of life, hunger and thirst usually fade, and the sensation of hunger is not experienced the way it would be by someone who is otherwise well.

Dry mouth is a real and treatable source of discomfort, and it is not the same as thirst. Regular mouth care makes a genuine difference to comfort. The care team can show you how to do it and how often.

How long can someone live after they stop eating and drinking?

There is no reliable answer, and anyone giving you a confident figure is guessing. NICE states plainly in its decision aid that it is not possible to know in advance what will happen to any individual person.

Timescales vary widely depending on the person's overall condition, other illnesses and how much they are still taking. As the disease progresses, the body often needs less fuel and may have less energy, so reduced intake can reflect lower needs rather than a separate problem. The care team caring for them day to day is best placed to talk you through what they are seeing, and it is entirely reasonable to ask them directly.

What can be said is that the focus at this stage shifts from nutrition to comfort. That is not giving up. It is a change in what care is for.

What can I do at this stage?

• Continue offering food and drink for comfort if they want to eat or drink, without pressure
• Keep their mouth and lips moist and comfortable, as the care team advises
• Focus on comfort, familiar company, music, touch and a calm room
• Ask the care team about anything that seems to be causing discomfort
• Ask what to expect next, so that changes do not frighten you when they happen

Continuing to offer is not the same as pressing someone to eat. Offering respects them. Pressing can cause distress and, where swallowing is unsafe, real harm. Family members or another loved one often notice subtle signs of comfort or distress first, so mention these to the care team.

The guilt

Almost every family carer in this position feels they should be doing more, and worries that stopping encouragement means giving up.

It is worth naming that plainly. Not being able to make someone eat is not a failure of care. In advanced dementia it is a feature of the illness. The care you are giving at this stage is comfort, presence and dignity, and that is real care.

Looking after yourself

Carer exhaustion is not a side issue. NICE recommends that carers of people living with dementia are offered psychoeducation and skills training, which includes education about the condition and the changes to expect, personalised strategies, help with communication, and advice on looking after their own physical and mental health and emotional wellbeing.

If that has not been offered to you, ask about it. You are entitled to support in your own right, and you are also entitled to a carer's assessment through your local authority. If you feel isolated, a dementia-focused online community can also offer peer support and shared experience.

Practical things that help:

• Ask for the specific professional you need rather than general help. Speech and language therapy, dietetics, the memory service, the GP
• Keep a short written note of what you are seeing, since it makes appointments far more productive
• Accept practical offers of help, particularly around mealtimes
• Talk to someone about how it is affecting you, not only about the caring tasks

Red flags: when to seek help urgently

Seek urgent medical help if the person:

• Chokes, or becomes breathless during or after eating or drinking
• Develops a fever, rapid breathing or new severe drowsiness
• Becomes suddenly much more confused than usual
• Shows signs of significant dehydration, such as very little urine, sunken eyes or marked drowsiness
• Is in pain that is not controlled
• Has not eaten or drunk anything at all for a prolonged period and this is a new change

A sudden change in someone with dementia is usually a sign of a new physical problem, most often infection, pain or constipation. It is worth acting on quickly because these are often treatable .

Medical Disclaimer

This article is for general information only. It is not medical advice and it does not replace assessment by the healthcare professionals who know the person you care for.

If someone with dementia has stopped eating or drinking, or their eating has changed suddenly, contact their GP practice or care team. Sudden changes often have treatable causes such as infection, pain or constipation.

Do not change food textures, thicken drinks or alter any prescribed medicine without professional advice. Where there are concerns about safety when eating or drinking, ask for a speech and language therapy assessment.

If the person chokes, becomes breathless, develops a fever with rapid breathing or severe drowsiness, or becomes suddenly much more confused, seek urgent medical help.