Не съм сигурна, но "диета" май означава начин на хранене, а не ограничаване от дадена храна. Ето какво намерих в Мериам Уебстер. Etymology: Middle English diete, from Anglo-French, from Latin diaeta, from Greek diaita, literally, manner of living, from diaitasthai to lead one's life

We are such stuff as dreams are made on and our little lives are rounded with a sleep...