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Low-calorie, or ‘starvation’ diets, are most often used by the do-it-yourself dieter. These diets are defined as any meal plan that limits total caloric intake to 1200 calories or less. Ironically, any diet this restrictive requires a Doctor’s script. Side effects, including constipation and dehydration, are the most common reason cited for the failure of low calorie diets.
Por ello, me inclinaría por "dieta de hambre"
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dieta de hambre
Explanation: No sé si TODAS son simples adaptaciones literales del inglés al español pero en Google aparecen 450 entradas para la frase "dieta de hambre".