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Critical challenges included insufficient sample size reducing statistical power, reliance on self-reported exposure data introducing recall bias, and inadequate control for confounding factors such as smoking and alcohol consumption

The entire body composition evidence base comes from preclinical mouse studies and cell culture experiments

For injectable research, the standard acetate form has a long history of effective use, but arginate offers theoretical advantages in stability

Introduction Peptide therapies have rapidly entered mainstream musculoskeletal culture, driven by social media promotion, direct-to-consumer wellness and optimization clinics, and the expanding commercialization of biologic optimization (Vasireddi et al