GLP-1 Advisor | One Day MD

Updated: October 2026 | Editorial team: OneDayMD | Purpose: Evidence and safety education Peptides are increasingly promoted for faster injury recovery, muscle growth, fat loss, better skin, improved sexual function, sleep and “anti-aging.” Some peptide medicines have transformed modern care. Others are experimental compounds with promising laboratory findings but little reliable evidence in people. The word peptide describes a type of molecule. It is not a guarantee of safety, effectiveness, purity or regulatory approval. Insulin and semaglutide are peptides; so are unapproved compounds sold online as “research chemicals.” Their evidence, manufacturing standards and medical uses are not interchangeable. Key takeaways Approved peptide medicines are not the same as research peptides. Approved medicines have been evaluated for specific uses, doses and risks. BPC-157, TB-500, MOTS-c, KPV, Semax and Epitalon remain investigat...

Updated October 22, 2026 | By the OneDayMD Research Team Can GLP-1 medications such as semaglutide help people with knee osteoarthritis avoid injections or knee replacement? The answer is more encouraging than it was a few years ago, but important uncertainties remain. A major randomized trial published in the New England Journal of Medicine found that semaglutide improved both body weight and knee osteoarthritis symptoms in people with obesity. In September 2026, the American College of Rheumatology (ACR) added a conditional recommendation for GLP-1 receptor agonists to help people with knee osteoarthritis and obesity achieve an appropriate weight, alongside diet and exercise. However, losing weight, relieving pain, regenerating damaged cartilage and avoiding surgery are different outcomes. Evidence supporting one does not automatically prove the others. This guide compares GLP-1 medications with platelet-rich plasma (PRP), stem-cell injections, conventional osteoarthri...