Scaling weekly loss to body fat
A common guideline expresses fat-loss rate as a percentage of body weight per week rather than a fixed number of pounds. Leaner individuals, who have less fat to spare, are often advised toward roughly 0.5 percent of body weight per week, while people carrying more body fat can typically sustain closer to 1 percent because they have larger energy reserves.
Expressing the target as a percentage automatically gives a heavier person a larger absolute weekly loss than a lighter person.
Why faster tends to cost muscle
Pushing the rate well above these ranges generally requires a steeper deficit, which raises the share of weight lost as muscle and intensifies hunger and fatigue. Keeping loss within a moderate range, alongside adequate protein and resistance training, helps preserve lean mass and adherence.
These figures are general guidelines and vary with starting body fat, training and individual response. This is general educational information, not personalized nutrition or medical advice.