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).Read Full Article