After 120 Papers, This Creatine Researcher Takes 10g Daily Himself

Source: Diary of a CEO | Published: 2026-06-15T07:00:19Z

Most creatine common wisdom is wrong: kidney damage is a false positive, hair loss has no evidence, the brain needs 20g to benefit but most gets blocked by the blood-brain barrier, and bone benefits start at 8g per day.

Five Common Myths, Dismantled One by One

Creatine damages your kidneys is the number-one misconception. The mechanism is straightforward: creatine metabolizes into creatinine, elevated creatinine skews estimated glomerular filtration rate (eGFR) downward — a false positive. Years of randomized controlled trials have confirmed that creatine at recommended doses does not harm the kidneys. But if you're supplementing, tell your doctor beforehand — otherwise your annual bloodwork will almost certainly trigger a callback.

Creatine causes bloating is only true in one scenario: jumping straight into a loading phase (20–30 grams per day for 5–7 days). The first few days do bring water retention, but once you taper to a 3–5 gram maintenance dose, the excess water dissipates. And the water that stays in your muscles is actually a good thing — increased cell volume activates protein synthesis pathways, which is one of creatine's core mechanisms for driving muscle growth.

Creatine is only for men, creatine causes hair loss, creatine causes cramping — none of these hold up to scrutiny. The hair loss claim traces back to a decades-old study on rugby players where high-dose creatine did elevate DHT, but levels remained within the normal range, and no one even measured follicle changes. A targeted experiment years later confirmed that 5 grams has zero effect on hair. As for cramping, creatine is an osmolyte — water molecules follow it into muscle cells, creating a superhydration effect. In hot environments, it should be your ally.

The Muscle Gains Are More Modest Than You Think

Data from a six-week trial: the creatine group gained only about 0.86 kilograms of body weight, most of it lean mass. And only roughly half of that lean mass was skeletal muscle — the rest was water, connective tissue, and organs. So creatine's direct contribution to muscle mass is moderate.

Where it truly shines is training performance. Supplementing with creatine significantly increases training volume (weight × reps × sets), accelerates recovery, and allows some athletes to handle higher training frequency. An eight-week study produced a telling curve: training volume rose during creatine supplementation, dropped back to placebo levels about four weeks after cessation, then rebounded upon resumption. This is especially meaningful for injury rehabilitation — creatine can accelerate the return-to-training timeline.

An often-overlooked point: creatine reduces the rate of protein breakdown, helping muscles maintain structural integrity. Cross-age data consistently shows that doses of 5 grams or more combined with resistance training outperform training alone in muscle mass, strength, and functional performance.

Bones Require a Higher Threshold

The minimum effective dose for bone benefits is 8 grams per day — some studies go up to 12 — and there's a non-negotiable prerequisite: exercise. Not a single study without an exercise intervention has shown creatine benefits for bone.

Candow's lab found that in postmenopausal women, 8–12 grams of creatine combined with resistance training slowed the rate of hip bone density loss. Note the wording — not increased bone density, but slowed the loss. The mechanism works both ways: creatine fuels osteoblasts (he used a Super Mario mushroom analogy) while simultaneously inhibiting osteoclast activity, partially mimicking the effects of bisphosphonate drugs.

This means creatine won't cure osteoporosis, but for populations at risk of bone loss — particularly perimenopausal and postmenopausal women — it may serve as an extra layer of protection. If a woman supplementing creatine falls, maybe her hip won't fracture. And we all know what a hip fracture means for an older adult: at least six months of bedrest, or a direct path into long-term care.

The Brain Is the Most Complex Battlefield

The brain synthesizes its own creatine, just like the liver. A healthy, well-rested, low-stress brain may not need any supplementation at all. But here's the question: whose brain is consistently in that state?

Candow maps the population onto a spectrum. At one end, the healthy brain — no supplementation needed. At the other, brains under metabolic stress — sleep deprivation, jet lag, night shifts, exam week. Most people land on the stress end.

MRI studies measuring brain creatine levels show that roughly 20 grams are needed to produce an observable acute effect. A landmark German study last year pushed it further: 30 grams of creatine given to young volunteers who then stayed awake for 21 hours. Brain creatine levels rose and partially offset the cognitive toll of sleep deprivation. A follow-up trial at about 14 grams showed diminished results.

The physiological bottleneck: creatine struggles to cross the blood-brain barrier. This explains why the brain requires far higher doses than muscle — not because it consumes more, but because most creatine gets turned away at the gate.

The Stroop Test: You Won't "Feel" Smarter

Candow ran a live demonstration. The Stroop test is simple: color words appear on screen, but the font color doesn't match the word — you have to name the font color, not read the word. Host Steven Bartlett, without any sleep deprivation, made his first mistake at number 18.

In the relevant study, subjects performed the test continuously for 90 minutes. The group that loaded creatine for a week beforehand (20 grams/day) significantly outperformed the placebo group in both speed and accuracy.

Candow was measured in his framing: you won't "feel" your brain getting sharper, but when you need to execute high-cognitive-load tasks — exams, high-pressure decisions, sustained focus — the difference shows up in the results. Creatine acts more like a safety net for the brain than a stimulant.

Alzheimer's, Depression, and Traumatic Brain Injury: Early Signals

Two single-arm studies published last year (by Matt Taylor's and Aaron Smith's teams) gave Alzheimer's patients 20 grams of creatine daily for eight weeks. Brain creatine levels rose 11%, cognitive test scores improved, and grip strength increased by 1.9 kilograms — grip strength being a key survival predictor in dementia patients. The limitation is the lack of a placebo control, but the direction is promising.

On clinical depression, a dataset from a University of Utah research team stands out: in women with major depression already taking SSRIs, adding 5 grams of creatine daily doubled the remission rate after eight weeks. A separate observational study covering over 200,000 adults found that those with the lowest dietary creatine intake had the highest rates of depressive symptoms. Candow emphasized that creatine has never been shown to work as a standalone treatment, but as an adjunct to existing therapy, the signal is clear.

Traumatic brain injury is the direction he's personally most excited about. Animal studies show that if creatine is on board before head trauma, concussion recovery accelerates significantly. His logic: anyone in a collision sport — boxing, MMA — should treat creatine as a preventive measure.

The Dosing Dilemma: How Candow Himself Takes It

At least 10 grams per day. That largely covers muscle needs (5–8 grams) and bone needs (8–12 grams), with some baseline cognitive protection. When crossing time zones or during high-stress periods, he temporarily bumps up to 20–25 grams, then drops back to 10 once things normalize.

More noteworthy is how he takes it: not all at once, but spread throughout the day. Five grams go into his training water bottle, sipped during the workout; a few more grams in the morning. His lab has assessed over a thousand subjects and found that this spread-out approach virtually eliminates GI discomfort, water retention, and weight fluctuation. One study even showed that taking 1 gram every 30 minutes, totaling 20 grams, produced higher retention rates than a single bolus.

Host Bartlett mentioned occasionally feeling dizzy when taking larger doses on an empty stomach or while dehydrated. Candow explained the mechanism — it's tied to methyl metabolism: creatine is the body's largest methyl consumer, and when you flood the system with supplemental creatine, the methyl groups previously used for endogenous creatine synthesis get freed up and redirected toward adrenaline production — hence the racing heart and mild jitteriness. Splitting into smaller doses throughout the day avoids this entirely.

Three Hard Rules for Buying Creatine

Candow recommends only creatine monohydrate. All the safety and efficacy evidence is built on this "relic" discovered in 1832. Creatine hydrochloride and other newer formulations have some research behind them, but none has been proven safer or more effective than monohydrate.

Three purchasing criteria: first, the label lists Creapure (high-purity monohydrate manufactured in Germany); second, the packaging carries NSF or another third-party certification; third, confirm the product actually contains creatine — he mentioned a YouTuber who tested creatine products on the market and found that 90% contained no active ingredient whatsoever.

Resistance Training Is the Hammer in the Toolbox

Candow used a toolbox metaphor to rank priorities. The hammer is resistance training — not cardio, not sleep, not nutrition. His reasoning: resistance training captures nearly all the benefits of aerobic exercise (improved cardiovascular health, mitochondrial function, VO₂ max) while additionally strengthening the musculoskeletal system — something cardio barely touches.

After 40, sedentary individuals lose an average of 1% of muscle mass per year, with strength declining even faster at 1–3%. That downward curve becomes catastrophic at 60, 80, 100. Resistance training turns that curve into a plateau.

The good news is the bar is low: two full-body sessions per week is enough. You don't have to lift heavy every time — light weights taken close to failure produce muscle growth comparable to heavy loads. Heavy weight becomes irreplaceable only for pure strength goals. His cardio recommendation is 150 minutes of moderate-intensity activity per week, which he considers conservative — and the intensity should be higher.

You Probably Don't Need as Much Protein as You Think

1.2–1.6 grams per kilogram of body weight is sufficient for most people. A 70-kilogram person needs roughly 84–115 grams. The upper bound for high-intensity trainees is about 1 gram per pound of body weight. Protein beyond what's needed won't all convert to muscle — it gets channeled into synthesizing hormones, blood cells, and other functions.

Vegetarians and vegans can hit adequate total protein but need to eat more volume to cover all essential amino acids. Creatine is trickier — dietary creatine exists only in animal foods (red meat, seafood, poultry), leaving vegans with zero dietary creatine. This is precisely why their response to creatine supplementation is "the strongest on the planet."

The protein-creatine combination is a force multiplier: several studies show that high-quality protein plus creatine outperforms either one alone for lean mass and athletic performance.

A Two-Year Trial and a Potentially Underestimated Finding

Candow's lab ran a two-year trial supplementing postmenopausal women with approximately 0.14 grams per kilogram of body weight daily. Positive effects were observed in both bone preservation and muscular performance. It's one of the few creatine studies with sufficient duration.

Another potentially underestimated finding comes from his own lab's sleep research: healthy young women who supplemented 5 grams of creatine on training days slept an average of one hour longer. The mechanism remains unclear — if creatine aids brain recovery, you'd logically expect to need less sleep, not more. The study needs replication in men, but if the finding holds, Candow considers it a game-changer.

He Fears Death, So He Studies How to Live Longer

At the end of the interview, Candow admitted to an extreme fear of death — not rhetorically, but literally "I don't even want to think about it." He's Catholic, believes in heaven, but still wants to stick around a while longer. That fear has driven his entire career: if he can help even one person live longer, healthier, and happier, the work is worth it.

He expects to spend the next 20 years still researching creatine. Because even after all this work, when asked "what's the optimal dose?" — his answer, and that of every colleague in the field, remains: we don't know.