Energy balance

Combining a very-low-energy diet (VLED, <800 kcal/day) with a behavioral weight loss program produces significantly greater long-term weight loss (3.9 kg at 12 months) compared to a behavioral program alone, with benefits maintained up to 60 months.

If you are overweight or obese, adding a very-low-energy diet (under 800 calories a day, typically liquid or meal replacements) to a standard behavioral weight loss program (like counseling or support groups) will help you lose more weight in the long run (up to 5 years) than just the behavioral program alone. The diet is safe for most people, with side effects being mostly minor (like tiredness or hair thinning) and serious issues being rare. You should discuss this with a healthcare provider to ensure it's appropriate for you, especially if you have other health conditions.