What's Is Creatine? (And Should You Care?)

Good morning!

So in case you haven’t seen, creatine has been having a moment, and not just in bodybuilding circles. It's moved into the mainstream wellness conversation, with claims ranging from workout performance to brain health.

When a supplement gets this much attention, I get curious, but also skeptical. Because trendy doesn't mean effective, and popular doesn't mean safe.

So this week, we're doing what we always do, look at the science. What is creatine? How does it work in your body? And most importantly, do the benefits hold up when you strip away the marketing and look at the research?

Key Takeaways

• Recovery comes first: Sleep, movement, hydration, and self-compassion are the foundation for feeling like yourself again.

• Community makes change easier: Movements like Dry January work because you don’t have to do it alone.

• Start small, aim high: Even imperfect effort is better than standing still—progress beats perfection every time

CORE

What is Creatine?

Let's start by clearing up the biggest misconception. Creatine is not a steroid, and it's not some synthetic lab creation designed to bulk you up overnight. It's an amino acid derivative that your body produces naturally (about 1-2 grams per day), made by your liver from three essential amino acids: arginine, glycine, and methionine.

You also get roughly another gram from eating meat and fish. So if you've ever eaten a steak or piece of salmon, you've consumed creatine. Your body uses it for energy metabolism, particularly in your muscles and brain.

The supplement version? It's just a concentrated form of what's already in your body and in your food. Nothing exotic or synthetic, just more of what you already have.

The 3-Charge Battery

To understand why creatine matters, we need to talk about ATP, or adenosine triphosphate. ATP is a molecule with three phosphate groups attached. Each phosphate bond stores energy, and when your cells need fuel, they break one of those bonds. ATP becomes ADP (two phosphates), then AMP (one phosphate), and eventually just adenosine. Basically, it’s a battery with 3 ‘charges’.

The problem? Your muscles only store enough ATP for 2-3 seconds of maximum effort. So how are we able to do… anything? Lift a heavy grocery bag? Chase after a toddler? Your body needs a way to rapidly regenerate ATP, and that's exactly where creatine comes in.

Inside your muscle cells, creatine exists as phosphocreatine (creatine with an extra phosphate attached). When ATP loses its first phosphate, or charge, an enzyme immediately grabs a phosphate from this nearby creatine and reattaches, essentially recharging the molecule almost immediately. This happens in milliseconds, which is why you can sustain effort for longer than just a few seconds.

But wait… if I only have enough ATP for 2-3 seconds, can I do anything without creatine? Yes, as usual, your body preppared. For regular, moderate activities, your body regenerates ATP through other systems (like burning glucose/carbs or ogygen/fat).

These systems work great but are slower. Creatine is the fastest system for rapid ATP regeneration during short bursts of intense effort (lifting heavy, sprinting, jumping).

Creatine and the Gym

Ok so yes, our body makes creatine naturally. But let's be honest, it's not exactly overproducing. That’s why people supplement to saturate their muscles with extra creatine, achieving two primary effects:

Deeper phosphocreatine reserves. By saturating your muscles with creatine, you expand the phosphate reservoir available for rapid ATP regeneration. This means you can sustain maximum effort slightly longer before fatigue sets in.

Increased intracellular hydration. Creatine is osmotic, meaning water follows it into cells. Since creatine accumulates in muscle tissue, your muscle cells retain more water. This isn't just cosmetic swelling, proper intracellular hydration improves protein synthesis and accelerates recovery. Your muscles literally function better when adequately hydrated at the cellular level.

Over weeks and months, that extra little push means your body gets a little bit stronger, responding with just a bit more muscle and strength.

OMNIBLUE FOR WORKOUTS

Creatine helps you push harder. OmniBlue helps you recover faster.

When you're actively exercising and pushing yourself physically, recovery becomes one of the most important aspects for growth. It’s also where ocean-sourced minerals shine. 

OceanElements’ clean, bioavailable minerals and electrolytes help you hydrate, replenish what you lose, supporting cellular repair, and giving your muscles the building blocks they need to rebuild stronger.

Does Creatine Improve Brain Function?

When I was growing up, omega-3s were marketed as the ultimate brain food. Eat walnuts because they're shaped like brains, take fish oil for focus, all of that. These days, it feels like every supplement gets repositioned as a cognitive enhancer, and creatine has officially joined that crowded party.

Some studies suggest it might improve mental performance during sleep deprivation, which sounds fantastic if you're a parent, shift worker, or anyone who's ever sacrificed sleep for, well, literally anything.

However, the research is based on studies with a measly 15 and 19 participants, respectively. Could there be something worth investigating? Sure. Is there enough evidence to confidently recommend creatine for brain health? Not so much.

My recommendation as a dietitian? Stick with what we know actually works for brain health: high-quality fatty fish, walnuts, a variety of colorful fruits and vegetables, adequate minerals, and most importantly, actually getting enough sleep. 

Once we have robust research showing real cognitive benefits from creatine, I'll be the first to update this recommendation. Until then, treat creatine as what it is: a well-researched tool for physical performance.

ENDNOTE

Final Thoughts

So there you have it! If you're looking to optimize your workouts and recovery, creatine is a safe, well-researched option worth considering. Just remember, it's a tool to enhance your effort, not replace it!

Until next week!

Adrian Macdonald | Team Dietitian | The 8% Newsletter Author