McKechnie T, Kuszaj O, Perks H, Rattansi S, Meyhofer Pedroso C et al.
BJS 2026; 113: znag023.
Of 91 randomized patients, 81.7 per cent adhered to the 3-week intervention, and those in the low-energy diet group lost more weight (mean difference 4.5 kg, 95 per cent confidence interval -5.6 to -3.5). Meta-analysis of 5 RCTs demonstrated a non-significant 19 per cent relative risk reduction in postoperative morbidity favouring the intervention (relative risk 0.81, 0.52 to 1.26, P=0.351).
Comment: Pre-operative low-energy diet: promising on the scale, feasibility and morbidity benefit remain unknown.
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