Now known as the 1:1 Diet, the Cambridge Diet kicks off with a 800-calorie phase made up of shakes, soups and bars that are (supposedly) designed to fulfil your daily nutritional requirements.

Health guru Michael Mosley created the 5:2 diet and has encouraged people to lead a healthier lifestyle through appearing on TV shows and documentarys. The expert first introduced the diet in a ...

Click the image below to find out if a 'crash' 800 calorie total diet replacement programme can help you lose weight. Get advice about your options and healthy recipes for a less rigorous diet ...

The diet he developed claims to help people lose weight quickly by eating 500 to 800 calories a day and adding daily hCG injections to promote fat loss in places like the butt and thighs.

Meanwhile, items on the keto plan contain around 800 mg on average. Despite the lower calories and low sodium, Healthline writer Rachael Ajmera, MS, RD, calls the meals “tasty, filling ...

In the study, young women who replaced high-calorie foods with low-energy-density foods ate 800 fewer calories a day ... ways to keep the volume in your diet while lowering the density (and ...