The main symptom of malnutrition (undernutrition) is unintended weight loss, although this isn't always obvious.
Most people who are malnourished will lose weight, but it is possible to be a healthy weight or even overweight and still be malnourished.
Someone could be malnourished if:
See your GP if you've unintentionally lost a lot of weight over the last few months.
If you notice a friend or family member has lost lots of weight, talk to them about your concerns and encourage them to get help.
Other signs of malnutrition include:
See your GP if you have these symptoms. If you notice these problems in someone else, try to encourage them to get help.
Symptoms of malnutrition in a child can include:
Contact your GP if you're concerned about your child's health or development at any point.
Page last reviewed: Mon Feb 2020 Next review due: Wed Feb 2020