Some 11,515 children have been admitted to hospital with malnutrition since 2015, according to research by an MP.
Data also shows there were 2,483 hospital admissions of children and adults due to malnourishment between January and June this year, according to Freedom of Information responses from nearly 50 hospital trusts in England.
Liberal Democrat leadership hopeful Layla Moran, who collected the data, said she was “shocked” at the figures – which are equivalent to 103 hospitals admissions per week.
The Liverpool Women’s Hospital trust reported a case of malnutrition in pregnancy, while the Royal London Free trust and Newcastle upon Tyne Hospitals trust both recorded 656 overall cases in 2020.
Some 80 NHS trusts responded to the Freedom of Information request, while only 50 provided substantive information, according to the MP.
Commenting on the data, Ms Moran said: “Today, in the UK, thousands of friends, relatives, neighbours and colleagues are at risk of the effects of malnutrition.
“These figures shocked me and make me angry that in Britain, in 2020, people can be hospitalised due to malnutrition.
“We need to move forward and create a system of social security that helps everyone and makes sure no one goes hungry in our country.
“The reasons for fixing this silent crisis are stark. Malnutrition and mortality are usually closely linked.
“Malnutrition lengthens hospital stays, reduces quality of life and increases the risk of developing other diseases.”