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.
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Some 66 people have been killed after the plane they were travelling on crashed in southern Iran.
The letter calls for an end to harassment, abuse, and impunity in a world "ripe for change".
Police say that anyone who sees Whitehouse should not approach him, but instead call them on 999 and quote incident 23 of 18 February.