Hydration and nutrition for older people living at home

Dehydration in elderly people is common because thirst fades with age, and some older people drink less to avoid trips to the toilet. The NHS says older adults are more at risk of dehydration. Signs include dark, strong-smelling urine, feeling light-headed and, in serious cases, confusion. Regular drinks, easy meals and a watchful eye for weight loss can prevent many problems.

At a glance

• The NHS says older adults are at higher risk of dehydration. Aim for pale urine through the day.
• Guy’s and St Thomas’ NHS Foundation Trust advises older people to try to have 6 to 8 glasses of fluid a day.
• Unintentional weight loss of 5–10% or more over 3 to 6 months is a key sign of malnutrition (NHS).
• In a BAPEN UK survey, 56% of adults screened who were living in their own homes were at risk of malnutrition, the highest of any setting.
• Call NHS 111 for dizziness that won’t go away or very little urine; call 999 for signs of shock or confusion (NHS).

Why are older people at risk of dehydration and malnutrition?

Several things can combine:

• a weaker sense of thirst and a smaller appetite;
• worry about continence, leading to less drinking;
• memory problems, such as forgetting to eat or drink, or forgetting whether they have;
• difficulty shopping, cooking or opening packaging;
• swallowing problems, poor teeth or ill-fitting dentures;
• low mood, loneliness or bereavement;
• illness, infections or medicines that affect appetite or fluid balance.

The NHS lists older people, those living alone or with limited mobility, and people on low incomes among those at higher risk of malnutrition.

What are the signs of dehydration in older people?

The NHS lists these symptoms:

• feeling thirsty;
• dark yellow, strong-smelling urine;
• peeing less often than usual;
• a dry mouth, lips and tongue;
• headache and feeling light-headed.

In older people, dehydration can also show up as confusion or a fall. If you notice sudden confusion, seek medical advice.

What are the signs of malnutrition?

• Unintentional weight loss: losing 5–10% or more of body weight over 3 to 6 months (NHS).
• Clothes, rings or dentures becoming loose.
• Tiredness, weakness and low energy.
• Getting ill more often, or taking longer to recover.
• Loss of interest in food.

Poor nutrition also raises the risk of falls. Guy’s and St Thomas’ notes that malnourished older adults have a 64% higher risk of falling. See our falls prevention checklist.

How much should an older person drink?

Guy’s and St Thomas’ advises trying to have at least 6 to 8 glasses of clear fluids a day, and limiting caffeine and alcohol. The NHS says water or diluted sugar-free squash are good choices, and pale urine is a sign of drinking enough. People with heart or kidney conditions may have been given a fluid limit, so check with the GP.

Tips to help someone drink more

• Offer a drink with every meal and every visit.
• Keep a glass or bottle within reach at all times.
• Try different options: tea, milk, squash, soup, jelly or fruit with a high water content.
• Use a lightweight cup with handles, or a cup with a lid if hands are shaky.
• Don’t cut back fluids to avoid the toilet; talk to the GP about continence instead. See our guide to continence care at home.

How can you help an older person eat well at home?

Guy’s and St Thomas’ suggests:

• protein-rich foods in 2 to 3 meals a day, such as eggs, fish, beans, meat or dairy;
• 3 servings a day of calcium-rich foods;
• balanced meals with protein, carbohydrates and vegetables;
• a daily vitamin D supplement of 10 micrograms in autumn and winter. The trust advises that some people, including those who rarely go outside, may need it all year round.

Practical ideas:

• Small and often: little meals and snacks can be easier than three big meals.
• Make it social: people often eat more with company.
• Keep it easy: ready meals, frozen portions and simple snacks within reach.
• Check the fridge for out-of-date food on visits.
• Consider meal services. Your council can tell you what meal delivery runs locally; for one example, see our guide to meals-on-wheels options in London.

How can home care help?

A carer can make a real difference to eating and drinking:

• preparing meals and snacks your parent enjoys;
• offering and encouraging drinks at every visit;
• sitting with your parent at mealtimes;
• recording food and fluid intake if there are concerns;
• noticing weight loss, dry mouth or confusion and telling the family.

Visits timed around meals often work well. As of 2026, visiting care in England typically costs about £32–£34 an hour, varying by region, and 30-minute visits often cost 20–30% more per hour (Homecare Association and market price data, 2026). NICE says home care visits should usually be at least 30 minutes, which gives time to help with a meal. Read our guide to 15, 30 or 60-minute care visits, or visit our elderly care hub.

When should you get medical help?

Call NHS 111 or see an urgent GP if your parent (NHS):

• is unusually tired or drowsy;
• feels dizzy on standing and it doesn’t go away;
• has dark urine or is peeing very little;
• has a fast heartbeat or fast breathing.

Call 999 or go to A&E if they show signs of shock, such as pale or blotchy, cold skin, difficulty breathing, confusion or unusual sleepiness (NHS).

See the GP if your parent has lost weight without trying over the last 3 to 6 months (NHS).

Frequently asked questions

Why don’t elderly people feel thirsty?

The sense of thirst often weakens with age, so older people may not realise they need a drink (NHS England). Some also drink less on purpose to avoid getting up to the toilet, especially at night. Offering drinks regularly, rather than waiting for them to ask, helps prevent dehydration.

Can dehydration cause confusion in older people?

Yes. Confusion can be a sign of dehydration, and the NHS lists it among the signs of a serious problem that needs urgent help. Sudden confusion can also have other causes, such as an infection, so always seek medical advice rather than assuming it is dehydration.

What should I do if my parent is losing weight?

Book a GP appointment, especially if they have lost weight without trying over 3 to 6 months. The GP can check for underlying causes and may refer to a dietitian. Meanwhile, offer small, frequent meals and snacks, make mealtimes sociable, and check whether they can manage shopping and cooking.

Can a carer help with eating and drinking?

Yes. Carers can prepare meals, encourage drinks, sit with your parent at mealtimes and keep a record of food and fluid intake. They can also flag concerns, such as weight loss or a dry mouth, to the family or GP. Timing visits around meals often works best.

Sources

• NHS: Dehydration
• NHS: Malnutrition
• Guy’s and St Thomas’ NHS Foundation Trust: Falls, eating and drinking well
• BAPEN: What is the scale of malnutrition in the UK?
• NICE QS123: Length of home care visits
• Homecare Association: Research and reports
• Lottie: Care at home costs
• NHS England: older people encouraged to drink fluids (Feb 2024)

This guide is general information, not financial, legal or medical advice. Last reviewed September 2026.

Reviewed by The Care Panel team on 15 October 2026. This guide is general information about care in England, not legal, medical or financial advice. Rules and rates change; check with your council or an adviser before making decisions.