Full Breakdown
Creatine Supplementation: New Review Clarifies Benefits, Limits, and Future Directions
5/4/2026, 11:15:59 AM
Core Findings
A 2024 handbook, *Handbook of Creatine and Creatinine In Vivo Kinetics*, authored by pharmaceutical researcher Dr. Mehdi Boroujerdi, synthesizes current evidence on creatine. The work confirms creatine’s role as a cellular energy buffer that supports high-intensity muscle work and brain metabolism, and identifies three primary factors shaping efficacy: baseline stores, dosing regimen, and individual physiology.
Background & Key Figures
Creatine is synthesized in the liver, kidneys, and pancreas from glycine, arginine, and methionine; about 95 % of total body stores reside in skeletal muscle. Dr. Boroujerdi, the handbook’s lead author, is cited by athletes, older adults, and researchers investigating therapeutic uses for neurodegenerative and mood disorders.
Dosing, Physiology, and Efficacy
Standard protocols recommend a loading phase of 20 g/day for 5–7 days followed by 3–5 g/day for maintenance; a lower daily dose reaches saturation in roughly four weeks. Muscle tissue caps storage, so excess intake is excreted as creatinine. Women and older adults typically have lower baseline stores, which can amplify relative gains.
Implications & Impact
For athletes, optimized dosing modestly raises power output and training volume. In older adults, supplementation improves memory, mood, and processing speed, suggesting potential to mitigate age-related cognitive decline. Anti-inflammatory and antioxidant effects may benefit Parkinson’s disease, depression, and menopause-related musculoskeletal loss, though robust trials are needed.
Official Statements
Dr. Boroujerdi stresses that creatine supplies energy for muscle contraction and respiration but does not replace steroids or act as a direct anabolic agent. He notes a strong safety profile for healthy people but advises those with kidney disease to consult a doctor. The handbook calls for well-designed human studies using labelled creatine to resolve remaining questions about long-term dosing and therapeutic potential.
Criticism & Opposition
Marketing sometimes describes creatine as a magic bullet that builds muscle without training. The handbook refutes this claim and says kidney-damage concerns are largely debunked for healthy users, though caution is advised for vulnerable groups.
Conflicting Reports & Gaps
Cognitive and clinical benefits remain preliminary; large-scale, placebo-controlled trials are lacking. The efficacy of combining creatine with compounds like beta-alanine also remains inconclusive.
Verbatim Quotes
- “Creatine's role in muscle development is solely to provide energy for contraction and respiration, it is certainly not a substitute for steroids,” — Dr Mehdi Boroujerdi, pharmaceutical researcher
- “Additionally, the belief that larger doses yield greater benefits is unfounded, as muscle creatine stores have a saturation limit.” — Dr Mehdi Boroujerdi, press release
- “Excess creatine is simply excreted as creatinine, offering no additional advantage.” — Dr Mehdi Boroujerdi, press release
- “Despite its many benefits, creatine is not a magic bullet.” — Dr Mehdi Boroujerdi, press release
What’s Next
Future priorities include large-scale cognitive trials, evaluation of creatine as an over-the-counter therapeutic agent, and refined dosing guidelines for diverse populations.
