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Why muscle gets harder to keep after 40, and what leucine has to do with it.
Muscle becomes less responsive to protein with age. The research points at the dose of one amino acid, and at how often you hit it.
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Losing weight on a GLP-1? What the research says about keeping your muscle.
Roughly a quarter to a third of the weight that comes off on these medications is lean mass. Here is what the studies recommend, and where a five-calorie stick fits.
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