Bonnie Steinbock, professor of philosophy who specializes in bioethics at the University at Albany in New York, said it magnifies the superficiality in society.

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Ms Steinbock encourages patients to communicate their needs too.

BBC: Do hospitals cater for patients with special diets?

Eileen Steinbock, from the British Dietetic Association's Food Counts group, which has looked at improving nutrition in hospitals, says what matters most is communication between caterers, dieticians and staff on the wards.

BBC: Do hospitals cater for patients with special diets?