The largest meta-analysis ever conducted on sports supplements, reviewing 847 studies and 42,000 participants, has confirmed creatine monohydrate as the single most effective legal performance-enhancing supplement available.
Key Findings
The analysis, published in the Journal of the International Society of Sports Nutrition, quantified creatine's effects across multiple performance domains.
- Strength improvement: 5-15% increase in 1-rep max across major lifts
- Lean mass gain: 2-4 lbs additional muscle over 12-week training periods
- Power output: 10-20% improvement in short-duration explosive activities
- Cognitive performance: Emerging evidence of 8-12% improvement in working memory tasks
- Safety: No adverse effects on kidney or liver function in healthy individuals at recommended doses
Practical Recommendations
Researchers recommend 3-5 grams of creatine monohydrate daily — the cheapest form remains the most studied and effective. Loading phases are unnecessary. Timing is irrelevant. The supplement works equally well for men and women across all age groups, with particular benefits for older adults maintaining muscle mass.
