[Discussion] protein is doing more work than we give it credit for
Posting this as a discussion rather than a claim: protein is doing more work than we give it credit for.
How to make a DEXA comparison mean anything.
Same machine, same clinic, same protocol. Same hydration and fasting state, as far as you can manage. At least three to four months apart, because the measurement error is large relative to short-term change. Three scans rather than two, because the first pair cannot distinguish a trend from noise.
Do less than that and you have two numbers with an offset of unknown size, which people then react to by rebuilding a training programme. The free alternative — a few tracked lifts and a monthly waist measurement — is directionally informative, costs nothing, and is far harder to over-interpret.
What the evidence actually supports, stripped of the arguing.
Some lean mass is lost in any weight-loss deficit. Resistance training and adequate protein intake are the two interventions with real support for limiting the proportion. Nearly everything else discussed on this board is a rounding error on those two.
The complication specific to this site is that appetite reduction makes protein intake a logistics problem: you are being asked to eat a fixed amount of something at exactly the point when eating anything is less appealing. That is why the practical threads here are about timing and food choice rather than motivation, and why measuring intake rather than estimating it is the single most common useful correction.
Three scans over eighteen months, same machine, same conditions. Only the third one made the first two interpretable.
Screenshot none of this. Read the whole thread, including the parts where I am told I am wrong.
best — the order this archive was captured in
Reminder that nobody here is prescribing training and the sidebar says so.
Reminder that nobody here is prescribing training and the sidebar says so.
Disagreeing with this line: rate alone does not preserve lean mass. The training does.
Small fix — that is fat-free mass, not muscle mass. The scan cannot separate them the way the post assumes.
Same DEXA machine both times?
Fat-free mass index is a ratio of fat-free mass to height squared. It moves when either term does, which makes it awkward to interpret during active weight change.
Careful, that is a nutrition prescription aimed at another member and this board does not do those.
Compared two scans from different clinics and panicked over a difference that was inside the error margin.
Hydration status and fasting state affect the lean mass estimate. Standardising both is the difference between a comparison and a coin toss.
Push back: strength dropping in a deficit is not the same as lean mass loss. Related, not identical.
Correction: those scans are from different machines, and the difference you are describing is within the measurement error.
How many weeks between the two scans?
Yes. Nobody here is prescribing training or nutrition and the good posts say so.
lean mass loss during weight loss is expected, the question is how much