Creatine Alzheimer CABA Trial: 8 Weeks of 20 g/Day Increases Brain Creatine 11% Plus Cognitive Improvement
Creatine, well known as an exercise supplement, expands its category to brain targeting. The CABA (Creatine to Augment Bioenergetics in Alzheimer’s) pilot trial published in Alzheimer’s & Dementia: Translational Research & Clinical Interventions showed 8 weeks of 20 g/day supplementation in Alzheimer’s patients increased brain creatine 11% and improved working memory and executive function.
CABA pilot trial core results
Participants: 19 Alzheimer’s patients. Ages 60~90.
Intervention: Creatine monohydrate 20 g/day or comparison. 8 weeks.
Brain creatine increase: 11% increase. MRS (magnetic resonance spectroscopy) measurement.
Cognitive effect: Meaningful improvement in working memory and executive function.
Safety: Well tolerated. Mild side effects.
Significance: Validates creatine supplementation possibility in Alzheimer’s. Larger trials needed.
Meta-analysis data (2025 Nutrition Reviews)
Memory: Creatine supplementation meaningfully improves memory scores in general adults.
Attention time: Improved attention.
Information processing speed: Strongest effect. Meaningfully accelerated information processing speed.
Elderly data: Larger trials needed. Lack of consistent protocols and assessments.
What is creatine
Creatine: Naturally occurring molecule. Synthesized from methionine, glycine, arginine. Dietary sources: red meat, fish.
Creatine monohydrate: Most-studied form. Standard. Validated safety and efficacy.
Creatine phosphate: Energy storage form within cells. Used for fast ATP regeneration.
Muscle vs brain: Muscle stores 95%+ of creatine. Brain has 5~10%. Brain creatine phosphate core to neuronal energy metabolism.
Mechanism
ATP regeneration: Creatine phosphate rapidly converts ADP to ATP. Energy supply for neuronal activity.
Mitochondrial protection: Stabilizes mitochondrial membranes. Reduces oxidative stress.
Neuroprotection: Slows glutamate excitotoxicity. Defends against nerve damage.
Working memory targeting: Affects prefrontal cortex energy metabolism.
Sleep deprivation effect: Some data on single 5~10 g creatine protecting cognition in sleep-deprived adults.
Alzheimer’s mechanism: Reduced brain creatine phosphate in Alzheimer’s. Supplementation supports energy metabolism.
Category expansion beyond exercise
Traditional targeting: Muscle mass, exercise capacity, recovery.
New targeting:
- Cognition (memory, executive function, information processing)
- Alzheimer’s adjunct (CABA trial)
- Elderly sarcopenia + cognition
- Depression/anxiety (some trial data)
- Traumatic brain injury recovery
Creatine expanded from simple exercise supplement to neurological matrix.
Dose and forms
Standard exercise: 5 g/day. First week 20 g/day loading then 5 g/day maintenance.
Cognitive targeting: 5~10 g/day. Consistent daily.
Alzheimer’s/CABA trial: 20 g/day (high dose). Physician evaluation.
Elderly cognition: 5 g/day. Safe.
Duration: Effects start at 4+ weeks. Assessment at 8 weeks. Long-term safe.
Timing: With meals. Absorption enhanced with carbohydrates.
Who fits
Mild cognitive impairment (MCI): Adjunct after physician evaluation.
Family history of Alzheimer’s: Foundation option.
Adults 50+: Cognitive support.
Vegetarian/vegan: Dietary creatine deficiency. Greater supplementation effect.
Sleep-deprived populations: Some effect from single supplementation.
Exercise + cognitive targeting: Matrix option.
Who should be careful
Kidney disease: Creatine breaks down to creatinine. Evaluate kidney burden. Consult a clinician.
Pregnancy/breastfeeding: Limited data. Consult a clinician.
Mania or psychiatric disease history: Some data on possible effects.
Drug interactions: Caution with some medications. Consult a clinician.
Hypertension: Limited data. Monitor.
GI sensitivity: Some have GI discomfort. Take split with meals.
Daily guide
Step 1 — foundation: Exercise (150+ min/week), sleep 7~9 hours, dietary diversity, social connection, stress management. Foundation priority.
Step 2 — evaluation: Physician evaluation at 50+ or with cognitive concerns. Kidney function tests.
Step 3 — start creatine: Monohydrate 5 g/day (cognition) or 5~10 g/day. With meals and carbohydrates.
Step 4 — matrix: Omega-3 EPA + DHA 1~2 g, vitamin D 1,000~2,000 IU (25~50 μg), vitamin B12 (if deficient), magnesium.
Step 5 — assessment: Self-evaluate cognition, energy, exercise recovery at 8 weeks~3 months.
Step 6 — physician consultation: Physician evaluation with Alzheimer’s family history, medication, chronic disease.
Creatine is a supplement that expanded from exercise to brain targeting. Single molecule affecting multiple targets. Most powerful on the foundation (lifestyle). Larger data needed in Alzheimer’s trials.