Study
Quantification of the effect of energy imbalance on bodyweight
Hall KD et al. · 2011 · The Lancet
What it found
Mathematical and clinical confirmation that long-term bodyweight change is driven almost entirely by sustained calorie balance, with basal metabolism accounting for the majority of daily energy use.
How we grade it
Every study behind a HALE recommendation is graded A to D on design, size and how consistently the finding replicates. Tap the bars above for the full breakdown of what grade A means and how much weight to give it.