The 1,200-calorie plan is hard to sustain ... "Most individuals should avoid the 1,200-calorie diet unless there is a medical need for such a calorie deficit," Sauza says. "In rare circumstances ...

Determining how many calories you should burn per day requires a few steps, including figuring out your calorie requirements ...

The Cambridge Diet works by slashing calories, plain and simple. 'This relatively extreme weight-loss plan works by putting its participants into a very large calorie deficit,' says nutritionist ...