Hair loss. Kidney damage. Only for bodybuilders. The myths around creatine are everywhere — and almost none of them hold up to actual research. Here's what the science really says.
Few supplements have more myths attached to them than creatine. It causes hair loss. It's bad for your kidneys. It's just for meatheads who want to get huge. You need to load it or it doesn't work. You need to cycle off it.
None of that is accurate. Creatine is actually one of the most studied supplements in existence — decades of research across thousands of subjects — and it has one of the cleanest safety profiles in the entire category. Let me walk through the myths one by one.
What creatine actually is
Creatine is not a steroid. It's not a hormone. It's a naturally occurring compound your body already makes from three amino acids — arginine, glycine, and methionine — and that you get from eating meat and fish. Your muscles store it as phosphocreatine, which is used to rapidly regenerate ATP during high-intensity efforts. Supplementing with it just raises your muscle stores higher than you can get from diet alone.
The myths, debunked
Myth 1: Creatine causes hair loss
This one comes from a single 2009 study on rugby players that found elevated levels of DHT — a hormone linked to hair loss — after creatine supplementation. The study didn't actually measure hair loss. DHT levels went up but stayed within normal range. That study has never been replicated. The body of research on creatine does not support a connection between creatine use and hair loss. If you're genetically predisposed to male pattern baldness, DHT is relevant to you — but the evidence tying creatine to that is extremely thin.
Myth 2: Creatine damages your kidneys
This is probably the most persistent myth, and it stems from a basic misunderstanding. Creatine supplementation raises creatinine levels in the blood. Creatinine is a waste product of creatine metabolism, and elevated creatinine is also a marker doctors use to screen for kidney dysfunction. So people see high creatinine and panic.
The problem: in people supplementing with creatine, elevated creatinine doesn't indicate kidney damage — it just means more creatine is being metabolized. Studies on healthy individuals using creatine long-term consistently show no adverse effects on kidney function. The caveat: if you have pre-existing kidney disease, talk to your doctor before using it. For everyone else, there's no evidence of harm.
Myth 3: It's only for bodybuilders
Creatine improves performance in any activity that requires short, explosive bursts of power — sprinting, lifting, jumping, interval training. It also has emerging research supporting cognitive function, brain health, and recovery from concussion. Studies have shown benefits in older adults for maintaining muscle mass and strength. It's not a bodybuilding drug. It's a recovery and performance compound that happens to also be used by bodybuilders.
Myth 4: You have to load it
Loading — taking 20 grams per day for 5–7 days — will saturate your muscles faster. But taking 3–5 grams per day consistently gets you to the same endpoint within 3–4 weeks. The loading phase isn't necessary, and for a lot of people it causes GI discomfort. Skip it. Just take 3–5 grams daily and let it build up.
Myth 5: You need to cycle off it
There is no research supporting the idea that you need to cycle off creatine. Your body doesn't stop producing it endogenously at meaningful levels, and long-term studies show no adverse effects from continuous use. Take it year-round if you want. There's no physiological reason to stop.
How to actually take it
- –Form: Creatine monohydrate. Not creatine HCl, not buffered creatine, not any of the premium forms. Monohydrate is the most studied, cheapest, and works just as well.
- –Dose: 3–5 grams per day. 3g is sufficient for most people. Athletes with more muscle mass may benefit from 5g.
- –Timing: Doesn't matter much. Post-workout may have a slight edge based on some research, but consistency matters more than timing.
- –With what: Doesn't need to be taken with carbs or anything else. Just take it.
The one real side effect: creatine draws water into muscle cells. You may notice a 1–3 lb increase on the scale in the first week or two. This is intramuscular water, not fat, and it's part of how creatine works. Don't mistake it for weight gain.
The bottom line
Creatine monohydrate is one of the few supplements where the evidence is overwhelming and the safety profile is clean. Three to five grams per day. Every day. That's it. If you're training seriously and you're not taking creatine, you're leaving one of the cheapest and most proven performance tools on the table.
Want more like this?
Join the list for weekly insights on injuries, nutrition, and performance — straight from someone who's been through it.