800 calorie diet?

NHS to offer low calorie diet for diabetes treatment

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Very low calorie diets

A very low calorie diet (VLCD) is a clinically supervised diet plan that involves eating about 800 calories a day or fewer.

The diet usually involves replacing normal food with low-calorie shakes, soups, bars, or porridge containing milk.

VLCDs are typically for adults who are obese – defined as having a BMI over 30 – but should not be the first option to manage obesity.

These diets should only be followed under medical supervision for a maximum of 12 weeks continuously, or intermittently with a low-calorie diet – for example, for two to four days a week.

Most people who want to lose weight do not need to follow a very low calorie diet.

VLCDs are hard to follow

VLCDs may not be nutritionally complete and provide far fewer calories than most people need to maintain a healthy weight.

A daily limit of 800kcal is about a third of the average energy needs for a man (2,500kcal) and half needed for a woman (2,000kcal).

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