Campaigners are calling for standards of hospital food to be regulated across England by introducing the same control that is in place in schools and prisons.
It follows news that hospital chiefs have been giving themselves the the highest possible rating for their food, despite figures being put forward by an independent Care Quality Commission survey which showed half of patients were dissatisfied with hospital food.
Hospital chiefs think their patients are fed incredibly well and gave themselves the highest possible rating for their food, figures show.
Out of 156 hospitals in England, three out of five gave themselves full marks for the food served to patients.
However, this deliberately contradicts figures put forward by an independent Care Quality Commission survey which showed half of patients were dissatisfied with hospital food, said the Campaign for Better Hospital Food.
Alex Jackson, co-ordinator of the Campaign for Better Hospital Food, said: "It is time for the Government to come clean about the sorry state of hospital food in England and set mandatory standards for patient meals.
"This would only involve extending an existing policy which has seen it set mandatory standards for prison food and food served in Government departments, to go alongside those that already exist for school food."
NHS food "needs more money and investment" if it is going to adequately help a patient through recovery, said a health charity.
Michelle Mitchell from AGE UK was also keen to push for higher standards in nursing as the public "had heard story after story" about neglected patients who needed the support of a nurse or carer to eat.