Johnstone et al. 2002

Research paper

Johnstone AM, Faber P, Gibney ER, Elia M, Horgan G, Golden BE, Stubbs RJ. Effect of an acute fast on energy compensation and feeding behaviour in lean men and women. Int J Obes Relat Metab Disord. 2002 Dec;26(12):1623-8. doi:10.1038/sj.ijo.0802151

Why we cite it

A study of how a 36-hour fast affected the next day’s energy and nutrient intake in 24 healthy, lean men and women, each completing a fast (non-energy drinks only) and a maintenance control. Ad libitum intake on the following day averaged 12.2 MJ after the fast against 10.2 MJ after maintenance (P=0.049), where the fast had produced a negative energy balance of approximately 12 MJ. Subjects changed their feeding only at breakfast, choosing a higher-fat meal; motivation to eat, raised during the fast, returned to baseline once breakfast was eaten. The authors conclude that the fast ”did not induce a powerful, unconditioned stimulus to compensate on the subsequent day”.

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