Недоедание
Недоедание – это серьезное состояние, которое возникает, когда ваша диета не содержит необходимого количества питательных веществ.
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На этой странице
- Signs and symptoms of malnutrition
- When to see a GP
- Who's at risk of malnutrition
- Treatments for malnutrition
- Preventing malnutrition
- Symptoms Malnutrition
- Weight loss
- Other symptoms
- Symptoms in children
- Causes Malnutrition
- Health conditions
- Medicines
- Physical and social factors
- Causes of malnutrition in children
- Treatment Malnutrition
- Dietary changes and supplements
- Feeding tubes
- Treating malnutrition in children
Malnutrition is a serious condition that happens when your diet does not contain the right amount of nutrients.
It means "poor nutrition" and can refer to:
- undernutrition – not getting enough nutrients
- overnutrition – getting more nutrients than needed
These pages focus on undernutrition in adults or children. Read about obesity for more about the problems associated with overnutrition.
Signs and symptoms of malnutrition
Common signs of malnutrition include:
- unintentional weight loss – losing 5% to 10% or more of weight over 3 to 6 months is one of the main signs of malnutrition
- a low body weight – people with a body mass index (BMI) under 18.5 are at risk of being malnourished (use the BMI calculator to work out your BMI)
- a lack of interest in eating and drinking
- feeling tired all the time
- feeling weak
- getting ill often and taking a long time to recover
- in children, not growing or not putting on weight at the expected rate
Read more about the symptoms of malnutrition.
When to see a GP
See a GP if:
- you've unintentionally lost a lot of weight over the last 3 to 6 months
- you have other symptoms of malnutrition
- you're worried someone in your care, such as a child or older person, may be malnourished
If you're concerned about a friend or family member, try to encourage them to see a GP.
A GP can check if you're at risk of malnutrition by measuring your weight and height, and asking about any medical problems you have or any recent changes in your weight or appetite.
If they think you could be malnourished, they may refer you to a healthcare professional such as a dietitian to discuss treatment.
Who's at risk of malnutrition
Malnutrition is a common problem that affects millions of people in the UK.
Anyone can become malnourished, but it's more common in people who:
- have a long-term health conditions that affect appetite, weight and/or how well nutrients are absorbed by the gut, such as Crohn's disease
- have problems swallowing (dysphagia)
- are socially isolated, have limited mobility, or a low income
- need extra energy, such as people with cystic fibrosis, people who are recovering from a serious injury or burns, and those with tremors or shaking hands
People who are 65 years and over are particularly at risk, and weight loss is not an inevitable result of old age. Children under the age of five are also at risk.
Read more about the causes of malnutrition.
Treatments for malnutrition
Treatment for malnutrition depends on your general health and how severely malnourished you are.
The first dietary advice is usually to:
- eat "fortified" foods that are high in calories and protein
- snack between meals
- have drinks that contain lots of calories
Some people also need support with underlying issues such as limited mobility. For example, care at home or occupational therapy.
If a child is malnourished, their family or carers may need advice and support to address the underlying reasons why it happened.
If these initial dietary changes are not enough, a doctor, nurse or dietitian may also suggest you take extra nutrients in the form of nutritional drinks or supplements.
If you have difficulty eating and this cannot be managed by making changes such as eating soft or liquid foods, other treatments may be recommended, such as:
- a feeding tube – this can be either passed down your nose and into your stomach, or inserted directly into your stomach through the skin of the tummy
- nutrition that's given directly into a vein
Read more about how malnutrition is treated.
Preventing malnutrition
The best way to prevent malnutrition is to eat a healthy, balanced diet.
You need to eat a variety of foods from the main food groups, including:
- plenty of fruit and vegetables
- plenty of starchy foods such as bread, rice, potatoes, pasta
- some milk and dairy foods or non-dairy alternatives
- some sources of protein, such as meat, fish, eggs and beans
The Eatwell Guide has more information about the types of food you should include in your diet and how to get the right balance between them all.
Speak to a GP or specialist if you have a health problem that puts you at increased risk of malnutrition. You may have more complex dietary needs or need to take supplements.
Further information
- baby weight and height
- underweight children aged 2 to 5
- underweight children aged 6 to 12
- underweight teen girls
- underweight teen boys
- underweight adults
- keeping your weight up in later life
Symptoms Malnutrition
The main symptom of malnutrition (undernutrition) is unintentional weight loss, although this is not always obvious.
Weight loss
Most people who are malnourished will lose weight, but it's possible to be a healthy weight or even overweight and still be malnourished.
For example, this can happen if you're not getting enough nutrients, such as some types of vitamins and minerals, through your diet.
You could be malnourished if:
- you unintentionally lose 5 to 10% of your body weight within 3 to 6 months
- your body mass index (BMI) is under 18.5 (although a person with a BMI under 20 could also be at risk) – use the BMI calculator to work out your BMI
- clothes, belts and jewellery seem to become looser over time
See a GP if you have unintentionally lost a lot of weight over the past few months.
If a friend or family member has lost a lot of weight, talk to them about your concerns and encourage them to get help.
Other symptoms
Other symptoms of malnutrition include:
- reduced appetite
- lack of interest in food and drink
- feeling tired all the time
- feeling weaker
- getting ill often and taking a long time to recover
- wounds taking a long time to heal
- poor concentration
- feeling cold most of the time
- low mood, sadness and depression
See a GP if you have these symptoms. If you notice them in someone else, try to encourage them to get help.
Symptoms in children
Symptoms of malnutrition in a child can include:
- not growing or putting on weight at the expected rate (faltering growth)
- changes in behaviour, such as being unusually irritable, slow or anxious
- low energy levels and tiring more easily than other children
See a GP if you're concerned about your child's health or development at any point.
Causes Malnutrition
Malnutrition (undernutrition) is caused by a lack of nutrients, either as a result of a poor diet or problems absorbing nutrients from food.
Certain things can increase your risk of becoming malnourished.
Health conditions
Some health conditions that can lead to malnutrition include:
- long-term conditions that cause loss of appetite, feeling sick (nausea) and/or changes in bowel habit (such as diarrhoea and vomiting – these include cancer, liver disease and some lung conditions (such as chronic obstructive pulmonary disease)
- mental health conditions, such as depression or schizophrenia, which may affect your mood and desire to eat
- conditions that disrupt your ability to digest food or absorb nutrients, such as Crohn's disease or ulcerative colitis
- dementia, which can cause a person to neglect their wellbeing and forget to eat
- an eating disorder, such as anorexia
You can also become malnourished if your body needs an increased amount of energy – for example, if you're healing after surgery or a serious injury such as a burn, or if you have involuntary movements such as a tremor or shaking hands.
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Medicines
Some types of medicine may also increase your risk of developing malnutrition.
Some medicines have unpleasant side effects, such as making you feel sick, losing your appetite, or having diarrhoea, which could mean you eat less or do not absorb as many nutrients from food.
Physical and social factors
The following factors can also contribute to malnutrition:
- teeth that are in poor condition, or dentures (false teeth) that do not fit properly, which can make eating difficult or painful
- a physical disability or other impairment that makes it difficult to move around, cook or shop for food
- living alone and being socially isolated
- having limited knowledge about nutrition or cooking
- alcohol or drug dependency
- low income or poverty
Causes of malnutrition in children
In the UK, malnutrition in children is often caused by long-term health conditions that:
- lead to a lack of appetite
- disrupt digestion
- increase the body's demand for energy
Examples of these types of conditions include childhood cancers, congenital heart disease, cystic fibrosis and cerebral palsy.
Some children may become malnourished because of an eating disorder or a behavioural or psychological condition that means they avoid or refuse food.
Malnutrition caused by a poor diet is rare in the UK, but it can happen if a child is neglected, living in poverty or being abused.
Treatment Malnutrition
Treatment for malnutrition (undernutrition) depends on the underlying cause and how malnourished a person is.
You may be given advice to follow at home, or be supported at home by a dietitian or other qualified healthcare professional. In severe cases, treatment in hospital may be needed.
The healthcare professional in charge of your care must ask for your consent to treatment when starting or stopping nutrition support. If you're unable to give your consent, they must act in your best interest following medical guidelines.
Dietary changes and supplements
A dietitian will advise you about dietary changes that can help.
They may create a tailored diet plan that ensures you get enough nutrients.
They may also suggest:
- having a healthier, more balanced diet
- eating "fortified" foods that contain extra nutrients
- snacking between meals
- having drinks that contain lots of calories
- getting supermarket deliveries at home
If these measures are not enough, taking extra nutrients in the form of supplements may be recommended. These should only be taken on the advice of a healthcare professional.
You'll have regular appointments to check that any changes to your diet are helping to improve your nutrition. Your diet may need to be adjusted to make it more effective.
Feeding tubes
If you are unable to eat enough to meet your body's needs – for example because you have dysphagia (swallowing problems) – an alternative way of getting nutrients may be needed.
This can include:
- using a tube that's passed through your nose and down into your stomach (nasogastric tube)
- using a tube that's placed directly into your stomach or gut through the skin on your tummy (percutaneous endoscopic gastrostomy – PEG – tube)
- using a solution containing nutrients that's fed directly into your blood through a tube in a vein (parenteral nutrition)
These treatments are usually started in hospital, but they can be continued at home if you are well enough.
See dysphagia (swallowing problems) for more information about these feeding methods.
Treating malnutrition in children
Malnutrition in children is often caused by long-term health conditions, for which hospital treatment is needed. But this is not the case for all children with malnutrition.
Treatment may involve:
- dietary changes, such as eating foods high in energy and nutrients
- support for families to help them manage factors affecting the child's nutritional intake
- treatment for any underlying medical conditions causing malnutrition
- vitamin and mineral supplements
- high-energy and protein nutritional supplements – if the other treatments are not enough on their own
Severely malnourished children need to be fed and rehydrated with great care. They cannot be given a normal diet immediately. They'll usually need special care in hospital.
Once they're well enough, they can gradually begin eating a normal diet and continue this at home.
It's important that treatment is monitored regularly to make sure it's working. Weight and height measurements will be taken, and a child will be referred to specialist services if there's no improvement.
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