Research

Energy balance

Very Low-Calorie Diets (VLCDs) produce rapid weight loss (15-25% in 3-6 months) but are associated with high attrition and significant weight regain (>50%) at 1-2 year follow-ups.

VLCDs can help you lose weight quickly (15-25% in a few months), but they are hard to sustain. Most people regain more than half the weight within 1-2 years if they don't have a structured plan to transition to normal food and maintain lifestyle changes. Use VLCDs only under medical supervision and as part of a broader program.

GoodQualifiesHIGH confidence
Medically supervised VLCD programs found that patients who completed treatment experienced 15% to 25% weight loss at three to six months. However, attrition rates, cost, and regaining more than 50% of weight lost were found to be higher at one and two year follow-up evaluations.
Dellyse Bright et al. · Experimental Biology and Medicine · 2019

Why this rating

Supported by multiple studies cited in the review.

Source

Tipping the scales: Provider perspectives on a multi-disciplinary approach to obesity

Dellyse Bright et al. · Experimental Biology and Medicine · 2019

DOI 10.1177/1535370219825639

narrative_reviewCited 7×
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DOI resolved against Crossref · corpus check 2026-06-10

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