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Yes. The STEP-1 clinical trial found roughly 40% of weight lost on semaglutide is lean mass, including muscle. The average user loses two pounds of muscle for every three pounds of fat.
Resistance training 3 to 5 days per week plus protein intake of 1.2 grams per kilogram of body weight per day reduces muscle loss from 40% of weight lost down to 3%, according to a 2025 Endocrine Society study of 200 adults.
The research-backed target is 1.2 to 1.6 grams of protein per kilogram of body weight per day, spread across meals in 20 to 40 gram portions. A 180-pound person needs approximately 98 to 130 grams per day.
No. MedGrade's 2025 independent review found the Hume Body Pod has a real-world muscle mass error of 15 to 30%. GLP-1 drugs deplete glycogen and body water, which causes BIA devices to misread water loss as muscle loss.
Smartphone AI body scanning validated against DEXA achieves 2.6% mean absolute error (Pennington Biomedical Research Center, 240 participants, Dr. Steven Heymsfield). This outperforms every consumer BIA device and requires no hardware.
Research shows 60% of weight lost on GLP-1 drugs returns within a year of stopping. The regained weight comes back predominantly as fat rather than muscle, leaving users with worse body composition than before treatment.
