Is creatine good for your brain?
Creatine shows a slight improvement in memory in healthy adults, and that effect is clearly greater in older adults than in younger ones. The best-supported starting point is 5 grams of creatine monohydrate per day for at least 4 to 8 weeks.
Creatine has a measurable but modest effect on memory in healthy adults. Eight studies combined show a small improvement. The most striking finding: in people between the ages of 66 and 76, the effect was considerably larger than in younger adults, who showed no measurable cognitive benefit. Vegetarians also appear to benefit more than meat-eaters, which makes sense because their baseline level of creatine in the brain is naturally lower.
For short-term memory and logical reasoning, there are several indications that creatine helps. For other areas of thinking, such as attention and reaction time, the results are mixed. Two critical reviews emphasise that higher creatine levels in the brain do not always translate into measurable cognitive gains, and that differences in how studies were conducted make firm conclusions difficult.
One interesting application is the cognitive decline caused by sleep deprivation. A single dose of 0.2 grams per kilogram of body weight partly reduced the cognitive deterioration after 21 hours of being awake, with improvements in logical reasoning and alertness of up to 12%. Women appeared to benefit more than men. In peri- and postmenopausal women, 1500 mg of creatine hydrochloride per day for 8 weeks improved reaction time, with no serious side effects.
If you want to try creatine for memory and cognition, 5 grams per day of creatine monohydrate is the most thoroughly studied starting point, for a minimum of 4 to 8 weeks. For sleep deprivation or acute mental stress, studies used a short loading phase of 20 grams per day for 5 to 7 days. Worth noting: several authors of the reviews involved received payments from a creatine manufacturer, which colours some of their interpretations.
This answer draws on eight studies combined in a pooled analysis, supplemented by four evidence reviews and two critical expert reviews. The pooled analysis examining the memory effect found considerable variation among the individual studies, with results that differed widely, which weakens the conclusions. One evidence review assessed the methodological quality of six included studies: only one was rated 'good', with three rated 'moderate' or 'poor'. The researchers behind that review conclude that large, high-quality studies into creatine and cognition in older adults are still largely lacking. Several authors of other reviews are affiliated as paid advisors or researchers with a creatine manufacturer (AlzChem Group AG), which creates a risk of biased interpretation in those studies.
Does creatine also help with memory and concentration?
Creatine can improve your memory, but mainly if you are older, vegetarian, or your brain is under pressure. If you are a young, healthy meat eater who sleeps well, the effect is small to negligible.
How does creatine improve mood and wellbeing?
Small studies occasionally show positive signals in depression, but an international guideline based on many studies concludes that the evidence for creatine in mood and wellbeing is currently insufficient.
What does creatine do in your body besides building muscle?
Creatine does more in the brain than in the muscles: it buffers energy and protects the brain against stress such as sleep deprivation. For healthy people, however, the effect on cognitive ability is small and most visible under pressure, not at rest.
Does creatine affect dopamine levels?
In healthy people, creatine has no demonstrable effect on dopamine in the blood. Positive signals so far come exclusively from animal studies.
What is the best way to use creatine?
Creatine works best in combination with strength training: optionally start with a loading phase of 20 grams per day for 5 days and then maintain with 2 to 5 grams per day. If you have a kidney condition, discuss it with your doctor first.
Does creatine affect your sleep?
Creatine may improve how you experience your sleep, but objective measurements show no effect. The research is based on dozens of participants and the results are contradictory; do not use it as a sleep aid.