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The main symptom of malnutrition (undernutrition) is unintended weight loss, although this is not always obvious.

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:

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 of malnutrition include:

See a GP if you have these symptoms. If you notice them in someone else, try to encourage them to get help.

Symptoms of malnutrition in a child can include:

See a GP if you're concerned about your child's health or development at any point.