crash diet
US /ˈkræʃ ˌdaɪ.ət/
UK /ˈkræʃ ˌdaɪ.ət/

1.
dieta de choque, dieta relámpago
a diet that involves eating very little food, often with the aim of losing weight quickly
:
•
She went on a crash diet to fit into her wedding dress.
Ella hizo una dieta de choque para caber en su vestido de novia.
•
Crash diets are often unhealthy and unsustainable.
Las dietas de choque suelen ser poco saludables e insostenibles.