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The Diary Of A CEO · 2026-06-15 · Darren Candow

Anti-Aging Expert: Creatine Is The Fat Loss Secret Doctors Don’t Tell You - Dr. Darren Candow

62 research-tied claims examined: 4 contradicted 10 overstated 3 context 43 supported 2 unverified

4 Contradicted by research
0:06:04Darren Candowcontradictedhigh

The human body naturally synthesizes 1 to 3 g of creatine per day only in the liver and brain, and stores 95% of total creatine in skeletal muscle.

"It is making about 1 to 3 g a day, but only in two areas. So, this will be quite shocking for people. We're only actually making it in the liver and the brain. We don't make it in skeletal muscle, but you store 95% in our muscle." (said at 0:06:04)

The speaker claimed that the body synthesizes creatine "only in two areas... only actually making it in the liver and the brain" and stores 95% in muscle. While it is true that ~95% of creatine is stored in skeletal muscle and that endogenous synthesis is ~1 to 2 g/day, the assertion that de novo synthesis occurs *only* in the liver and the brain is biochemically incorrect and contradicted by established human physiology. De novo synthesis of creatine requires a two-step inter-organ pathway: the first step is catalyzed by L-arginine:glycine amidinotransferase (AGAT), which takes place primarily in the kidneys (and pancreas) to produce guanidinoacetate (GAA); GAA is then transported to the liver (and other tissues), where guanidinoacetate N-methyltransferase (GAMT) methylates it to creatine. Thus, the kidneys are essential for the primary systemic biosynthetic pathway, contradicting the claim that synthesis happens only in the liver and brain.

0:09:30Darren Candowcontradictedmoderate

A creatine loading phase (20-30 g/day for 5-7 days) acutely increases water retention for 3-5 days, after which maintenance dosing of 3-5 g/day moves the water intracellularly into muscle.

"This is where supplement companies want you to take about 20 or 30 g a day for about 5 or 7 days. That has been shown to increase water retention acutely. So, maybe it'll reside there for about 3 to 5 days, but after that, when you go on a maintenance phase of about 3 to 5 g a day, that water retention goes away. So, in the initial stages, if done improperly or too much, it can cause a little bit of water retention. The good news for everybody watching is after about the first week, that water's inside our muscle." (said at 0:09:30)

The speaker misrepresents the physiology and timeline of creatine-induced fluid retention. Creatine is an osmotically active substance that is actively transported directly into skeletal muscle cells via sodium-dependent creatine transporters. As a result, creatine draws water intracellularly into muscle tissue immediately from the start of supplementation (including during the acute loading phase), rather than causing general extracellular water retention that later 'moves' intracellularly only once a maintenance phase begins. Randomized controlled trials evaluating fluid distribution after creatine loading (e.g., 20–25 g/day for 5–7 days) show that total body water increases primarily via proportional intracellular expansion, with no alteration in the ratio between fluid compartments or delay in muscle uptake.

0:12:45Darren Candowcontradictedhigh

The claim that creatine causes hair loss originated from a study in rugby players where 20-25 g/day for 7 days increased DHT within the normal biological range without measuring hair loss or thinning.

"This myth came from a study in rugby players decades ago where creatine about 20-25 g a day for 7 days increased a hormone called DHT. It's a precursor for testosterone, which unfortunately has been linked to hair follicle loss and thinning. But the ironic thing is when creatine was given to these young males, the hormone went up, but it was still within the biological range, and no measure of hair follicle thinning or loss was done." (said at 0:12:45)

The speaker accurately describes the origins of the creatine-hair loss myth from a 2009 randomized trial by van der Merwe et al. in 20 college-aged rugby players. In that study, 7 days of creatine loading (25 g/day) increased serum dihydrotestosterone (DHT) levels by 56% (remaining within normal clinical limits), and the study did not evaluate hair thinning or loss. However, the speaker states that DHT 'is a precursor for testosterone'. This biochemical relationship is inverted: testosterone is the precursor to DHT, with DHT being synthesized downstream from testosterone via the 5-alpha-reductase enzyme. Because the speaker states this mechanism backwards, the claim is graded as contradicted.

0:37:42Darren Candowcontradictedmoderate

Patients with Alzheimer's disease, clinical depression, and concussion have reduced baseline creatine levels in the brain.

"So, there's been populations Alzheimer's disease, clinical depression, concussion. When those populations are evident, one of the biggest factors is that they have reduced creatine in their brain." (said at 0:37:42)

Magnetic resonance spectroscopy (MRS) studies and meta-analyses show that total brain creatine is generally stable across conditions like Alzheimer's disease, concussion/mild traumatic brain injury (mTBI), and depression—so much so that creatine is routinely used as the internal reference standard (e.g., NAA/Cr ratio) against which other metabolites are measured. In traumatic brain injury and concussion, meta-analyses show consistent reductions in N-acetylaspartate (NAA), but creatine levels are largely unaffected. Similarly, in Alzheimer's disease, reductions are characteristically seen in NAA and increases in myo-inositol, not a uniform reduction in creatine.

Unverified means no publication matching the claim was located; it does not prove the claim false. Spotted an error? See the corrections policy - disputes from the people quoted are prioritized.