Creatine, Sleep Scores and Self-Advocacy: Inside a Weekly Protocol Review
Bryan Johnson sits down with co-founder Kate Tolo and physician Mike Min for a weekly protocol review. They break down a headline-grabbing creatine study, explain why its design likely understated the compound's effects, and discuss how measurement turns vague body signals into usable knowledge.
Overview
This conversation opens with a former emergency physician describing the gulf between crisis medicine and preventive work, and his estimate that a large share of what arrives in an emergency department traces back to preventable chronic disease. That leads into a candid discussion of how ordinary people can advocate for themselves inside a system built around standardized pathways. The centerpiece is a study reporting that five grams of creatine daily produced no additional lean mass over twelve weeks of training.
Mike Min credits the researchers for accounting for early water retention with a wash-in period, but argues seven days is too short to saturate muscle at that dose, and that muscle mass was never creatine's strongest evidence base anyway. The stronger signals, he says, sit in cognitive function, bone and metabolic health, and power output in already-trained athletes. He offers a weight-based rule of thumb of roughly 0.1 grams per kilogram per day, notes that higher intakes have been studied for years without significant downsides, and explains why creatinine on a blood panel rises without indicating anything about dose adequacy.
The group then turns to body awareness, a study showing the brain compensates for impairment long before behaviour reveals it, and a two-month personal sleep-tracker comparison that found sleep scores tracked closely with the quality of work produced that day. The thread running through it all is that consistent measurement, not headlines, is what builds real intuition about your own body.
Key quotes
5The majority of what you see in medicine in general is chronic disease, and so much of chronic disease is preventable.
Doctors always talk about how much they hate it when their patients Google their problems, but that is such an active form of advocacy for yourself.
I wouldn't change a thing about your creatine intake based on this study, to be honest with you.
If I had to throw a number out there, five grams a day seems adequate for the average-sized human.
When my sleep score is low, I lack agency. I lack courage. I lack creativity. When my sleep score is high, I can power through anything.
Key ideas
9Two very different kinds of medicine
Emergency work means meeting people at the end of a disease process and being asked to fix it on the spot. Preventive work means thinking years ahead, which changes both the questions and the emotional experience of practising.
Most of what arrives is preventable
Trauma, appendicitis and infections are genuinely hard to prevent. But chronic disease dominates medicine overall, and a large majority of it traces back to habits and environment rather than accident.
Diagnosis is the art, treatment is the routine
Once a diagnosis is made, most care follows a standardized pathway. The real difficulty is a vague complaint like dizziness or belly pain, which can be produced by thousands of different conditions.
Self-advocacy is not an insult to your clinician
In an overloaded system, the default is the easiest path for everyone involved. Asking informed questions is how people stay off that default track, especially when the staff are stretched thin.
The wash-in period explained
Creatine draws extra fluid into muscle, which inflates lean-mass readings early on. This study measured at day zero and day seven to subtract that effect before the twelve-week training block began.
Seven days may not be enough to saturate
At five grams a day rather than a twenty-gram loading protocol, saturation is thought to take three to four weeks. A seven-day wash-in may therefore have absorbed some of the real gain into the baseline.
Muscle mass was never the strongest case
Prior studies showed only small muscle-mass changes. The more interesting evidence sits in cognitive function, bone and metabolic health, and in speed and power among already well-trained athletes rather than untrained participants.
Dose scales with body size and diet
A weight-based rule of roughly 0.1 grams per kilogram per day accounts for people of different sizes. A mixed diet already supplies one to two grams daily, while someone eating little red meat likely needs more.
The body compensates until it cannot
A study on mild intoxication found people could behave normally while scans showed genuine impairment. The same logic explains why decline can be detected long before anyone feels it.
Practical takeaways
6- 1
Walk in with questions 14:40
Before a consultation, write down your symptoms, what has changed and what you want ruled out. Prepared questions move you off the default pathway.
- 2
Scale creatine to your body 26:30
Roughly 0.1 grams per kilogram per day is a reasonable general-wellness reference, so a smaller person needs less than a larger one.
- 3
Skip the loading phase 28:10
Starting at around five grams daily and staying consistent reaches saturation naturally over three to four weeks, without a twenty-gram ramp-up.
- 4
Expect creatinine to drift up 30:00
Supplementing raises this kidney marker on a blood panel without indicating anything about dose adequacy, so interpret it alongside hydration and context.
- 5
Do not rewrite your routine on one headline 31:40
This was a twelve-week study in about sixty untrained people. Weigh a single result against the decades of evidence behind it before changing anything.
- 6
Start measuring before intervening 36:00
Track one thing daily and match the number to how you feel. That pairing is what turns vague sensations into a reliable read on your own body.
Topics & chapters
15A night out that felt like time travel
Bryan Johnson describes eating out with the team and being startled by ordinary restaurant food. Living inside a tightly built system made normal life feel foreign.
From the emergency room to the frontier of aging
Mike Min contrasts a shift in the emergency department with days spent on slowing the pace of aging. The two jobs could hardly be more different.
How much of it was preventable?
His estimate lands around eighty per cent. Chronic disease dominates medicine, and most of it builds up long before the crisis.
A shattered water jug and a nineteen-step protocol
Bryan Johnson recounts severing a tendon and looking up the emergency procedure in real time while waiting to be seen.
Routine protocols and the art of diagnosis
Most treatment is standardized once the diagnosis is made. The hard part is sorting a vague complaint into the right category.
Why the emergency room feels like chaos
Doctors in the United States may see around thirty patients a shift compared with roughly ten in New Zealand. The ratio explains much of the atmosphere.
Advocating for yourself in a broken system
Informed questions are described as a form of self-advocacy rather than an annoyance, especially where staff are burned out.
A remote intake for a family member
Kate Tolo walks through helping her mother work out what to ask about an eye problem, which turned out to involve inflammation and a scratched cornea.
The creatine study everyone shared
Five grams daily produced no additional lean mass over twelve weeks. Both groups gained the same two kilograms.
The wash-in period explained
The researchers measured at day zero and day seven to strip out early water retention before the training block started.
What the study did and did not measure
It looked at muscle mass in untrained participants only. Cognition, recovery, power and strength were never assessed.
How much creatine, and for whom
A weight-based rule of thumb, diet-dependent adjustments, and why the loading phase is optional. Higher intakes have been studied for years.
Blood markers and the missing health advisory
Creatinine rises with supplementation without indicating dose adequacy. The group imagines a public advisory that puts viral studies into context.
Body awareness and the compensation effect
Years of tracking build fine-grained intuition. A study on mild intoxication showed the brain masking impairment that scans could still detect.
A sleep-tracker experiment worth reading
A two-month comparison of four devices found sleep scores tracked closely with daily output, and that consecutive bad nights matter more than one.