Context
The success of peptide-based medicines such as semaglutide has triggered growing commercial interest in peptides for weight loss, muscle building, recovery and anti-ageing. However, many peptides sold online as “research chemicals” lack adequate human clinical evidence and regulatory approval.
Explanation
- Peptides are short chains of amino acids, the basic units that also form proteins; proteins are generally longer and structurally more complex.
- Peptides can function as signalling molecules and influence physiological processes such as metabolism, growth and hormone activity.
- Some hormones are peptides; for example, insulin is a peptide hormone involved in blood-glucose regulation.
- Several approved medicines are peptide-based, including semaglutide, a GLP-1 receptor agonist used for diabetes and weight management.
- However, being a peptide does not automatically establish safety or therapeutic effectiveness; each medicine requires scientific evaluation.
- Unapproved peptides marketed as “research chemicals” may lack reliable evidence on purity, dosage, toxicity and long-term effects.
- Products may also pose risks from contamination, incorrect dosing and unsafe injections.
- Therefore, clinical trials and regulatory approval are essential before therapeutic use.
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