Summary
Chris Masterjohn makes the case that most people are creatine deficient and explains the wide-ranging benefits beyond muscle building. He covers creatine's role in brain health, energy production, and cellular function.
Key Points
- Why most people are creatine deficient
- Creatine beyond muscle building
- Brain and cognitive benefits
- Cellular energy production
- Dietary sources vs supplementation
- Optimal dosing strategies
Key Moments
Creatine beyond muscle: vision, hearing, digestion, brain, and skin
Creatine powers far more than athletic performance. It fuels sperm motility, retinal signaling, inner ear sensitivity, stomach acid production, skin keratin, and 20% of brain energy. 3-5g/day saturates stores; 20g improved cognition during sleep deprivation.
"There's no point in optimizing your mitochondrial function if you don't also optimize your creatine."
Related Research
International Society of Sports Nutrition position stand: safety and efficacy of creatine supplementation
ISSN position statement confirming creatine monohydrate as safe and effective for increasing strength, power, and muscle mass, with no evidence of adverse health effects in healthy individuals.
Effects of Creatine Supplementation and Resistance Training on Muscle Strength Gains in Adults <50 Years of Age: A Systematic Review and Meta-Analysis.
Meta-analysis of 23 studies found creatine plus resistance training significantly increased upper-body strength (+4.43 kg) and lower-body strength (+11.35 kg) in adults under 50, with greater benefits in males.
Effect of creatine supplementation during resistance training on lean tissue mass and muscular strength in older adults: a meta-analysis
Meta-analysis of 64 studies showing creatine supplementation during resistance training increases lean mass gains by an average of 1.37 kg compared to training alone.
Effects of creatine supplementation and resistance training on muscle strength and weightlifting performance
Meta-analysis showing creatine supplementation increases strength gains by 8% and weightlifting performance by 14% compared to training alone.
Effect of creatine supplementation on body composition and performance
Meta-analysis confirming creatine increases lean body mass during resistance training, with effects seen across age groups.
Creatine Supplementation and Brain Health
Review demonstrating creatine's neuroprotective effects and cognitive benefits, particularly under conditions of stress, sleep deprivation, and aging.
The Effects of Creatine Supplementation Combined with Resistance Training on Regional Measures of Muscle Hypertrophy: A Systematic Review with Meta-Analysis.
Creatine supplementation combined with resistance training produced a small but consistent increase in direct measures of muscle hypertrophy (0.10–0.16 cm in muscle thickness) in both upper and lower body.
Creatine supplementation for optimization of physical function in the patient at risk of functional disability: A systematic review and meta-analysis.
Creatine supplementation improved sit-to-stand performance (SMD 0.51), upper-body strength (SMD 0.25), handgrip strength (SMD 0.23), and lean tissue mass (+1.08 kg) in populations at risk of functional disability.
