Does Creatine Make You Smarter? Strength, Safety, and Brain Energy Explained
I explain why creatine is a safe nutrient, not a steroid, debunking myths about testosterone and hair loss. While it reliably boosts short-term strength by expanding cellular energy reserves, the real intrigue lies in the brain. Since neurons also rely on creatine for energy delivery, I explore whether supplementing could enhance cognitive function, just as it powers muscle sprints.
I wish we could tell our bodies, 'Hey, we have access to unlimited amounts of food. Stop worrying about conserving energy and concentrate on being awesome.'
- olooney
Good discussion, but this conclusion:
> I don’t know. Maybe a little.
is not the right way to interpret the null result (insufficient evidence to reject null hypothesis that it has no effect) because the prior for supplements that people are trying to sell you is so low. In the absence of clear, strong evidence, you should assume the the whole thing is just an example of motivated reasoning. People want nootropics to be real, and other people really want to sell you readily available powders by claiming they have nootropic properties. In that environment, they were always going to trying to concoct a similar narrative about some supplement, and it just happened to be creatine. Those efforts were always going to result in a handful of "positive" studies that turn out to be non-reproducible, maybe because of p-hacking, maybe because of publication bias, maybe because of outright fraud. This is what the literature always looks like for stuff that just doesn't work. If it did work - if the effect size was large enough that you could personally detect it in your own life - then the papers would be trying to put error bars around the effect size, not trying (and failing) to barely distinguish it from a placebo.
“If your experiment needs statistics, you ought to have done a better experiment.” - Ernest Rutherford
- block_dagger
I have severe sleep apnea as well as insomnia. I may also be a multi-phasic sleeper. In any case my average sleep per night is ~3.5 hours with only ~1.5 hours of deep sleep. I use light therapy, CPAP, medications, etc but none of it solves my problems. I started taking creatine daily a couple of months ago. I've noticed a significant uptick in my cognitive abilities, despite being constantly sleep deprived. TFA doesn't touch on this apparent benefit of creatine, so thought I'd mention it for others who might be suffering from similar sleep issues.
- grvdrm
I take 5g/day, through better part of last 9-12 months (don't remember when I started).
No noticeable cognitive difference/improvement. And the more I've researched creatine the less convinced I am that there are reliable conclusions about cognitive impacts.
Significant physical changes! But other than the pure aesthetics, it's hard to say that my strength increases are tied to creatine or instead a solid routine, plan, diet, and progressive overload. Probably some all of above.
I also take whey protein isolate (20-25g at least once a day)
The Nootropic space fascinates me. A few observations:
- Not sure if caffeine is considered nootropic. Caffeine definitely makes a difference.
- Unclear if placebo effect or real, L-theanine seems to help with calm and focus.
- Otherwise, when it comes to what I'm sure alters my state/body/etc. - drugs! And I'm not suggesting anything specific but my point is the effects are obvious/real/etc. vs. much of the supplement space that suffers from very murky conclusions (imo).
- jamal-kumar
I switched from creatine to eating pickled herring or steak instead. It's WAY more expensive, but considering I don't live in a country with very great control over stuff like adulterants, I'll definitely elect for tasty and safe.
Each 2-ounce rollmop contains about a gram or two of creatine, sometimes more. Steak is about a gram per 8 ounces.
If you can afford it, it's way nicer than choking down that powder in water getting all crunchy in your teeth and stuff.
It's decent pre-workout food although not for everyone as mentioned elsewhere in the comments here (Something like 20% of people don't see any workout endurance benefits)
- doix
This matches what Gwern wrote years ago [0]. It does unequivocally make you stronger though. So if you're training anyway, may as well take it and hope it makes you smarter as well (just believing might be enough for that sweet placebo effect).
- John23832
Most people taking creatine just need to drink water. They drink more water using creatine. In reality, the water/hydration is doing the heaviest lift, not the creatine.
- faangguyindia
Sometimes I stay up until 1–3 a.m. because I'm working on a problem that's so interesting I can't stop until I make progress.
If I know I'm only going to get a few hours of sleep, I'll take 5–10 g of creatine, drink plenty of water, and go to bed. The next morning, I usually don't wake up with a headache.
If I skip the creatine under the same conditions, I'm much more likely to wake up with a headache after a short night's sleep.
Now it's become a habit, I automatically take creatine whenever I know my sleep duration is going to be much shorter than usual.
- lexoj
For me, whenever I took creatine I got headaches. (I drank enough water, and I could reproduce the issue everytime I tried it, so stopped it as it felt wrong)