How many calories are typically in a very low-calorie diet?

A very low-calorie diet (VLCD) is defined as a diet that typically contains fewer than 800 calories per day. These diets are designed to produce rapid weight loss and are often used under medical supervision for individuals with obesity who may need to lose weight quickly for health reasons.

The specific caloric threshold of under 800 kcal/day is crucial because it differentiates VLCDs from other low-calorie diets, which may still allow for higher caloric intake while promoting weight loss. By limiting calories to this extent, VLCDs can significantly reduce body weight and improve obesity-related health conditions in a controlled manner.

It is important to note that VLCDs should be closely monitored by healthcare professionals to ensure safety and adequacy of nutrition, as such low caloric intakes can lead to nutrient deficiencies and other adverse effects if not properly managed.