Salk Institute Jan 23 2025 About one in eight adults in the United States has tried or currently uses a GLP-1 medication, and a quarter of those users cite weight loss as their main goal. But weight loss doesn't discriminate between fat and muscle. Patients using GLP-1 drugs can experience rapid and substantial muscle loss, accounting for as much as 40% of their total weight loss. So how can we lose weight without also losing critical muscle? A new study from the Salk Institute has revealed