Peptide-Related Risks and Complications
Cardiovascular and Metabolic Risks
- Dose-dependent increases in hemoglobin occur with anabolic peptide use, raising thrombosis risk, according to the American Thoracic Society 1
- Testosterone-based peptides cause dose-dependent decreases in HDL cholesterol, worsening cardiovascular risk profiles, as reported by the American Thoracic Society 1
- The potential for accelerating prostate cancer growth in men using testosterone and anabolic peptides is a concern, as noted by the American Thoracic Society 1
Regulatory and Quality Control Issues
- Approximately 15% of nutritional supplements contain undeclared prohormones not listed on labels, posing a contamination risk, as found by the British Journal of Sports Medicine 3
- 25% of supplements purchased through US outlets have been contaminated with steroids, highlighting the need for stricter quality control, as reported by the British Journal of Sports Medicine 3
- Muscle-building products frequently contain prohibited selective androgen receptor modulators, aromatase inhibitors, β2-agonists, new anabolic steroids, and growth hormone releasing peptides, as discovered by the British Journal of Sports Medicine 3
- Contamination appears to be deliberate adulteration rather than accidental, according to the British Journal of Sports Medicine 3
- The principle of strict liability means athletes face sanctions regardless of whether contamination was known, as stated by the British Journal of Sports Medicine 3
Efficacy Concerns
- Growth hormone peptides often demonstrate increases in muscle mass without corresponding strength improvements, as found by the American Thoracic Society 1
- Studies in COPD patients showed lean mass increases without evidence of peripheral muscle endurance or strength improvement, as reported by the American Thoracic Society 4
- The disconnect between mass and function suggests these agents may not deliver the performance benefits users seek, according to the American Thoracic Society 1