2026 · Journal of the International Society of Sports Nutrition
Effects of creatine supplementation with and without exercise and diet intervention on body composition, cognitive function, and markers of health in middle-aged and older adults
Verdict
UNSCIENTIFIC
The study only partly follows the scientific method inside its paradigm, and the paradigm itself does not pass. The worse layer decides. The verdict is unscientific.
1·Study methodology · inside the paradigm
MIXED
Partly follows the scientific method within Allopathic Medicine.
2·Paradigm · Allopathic Medicine
UNSCIENTIFIC
Fails the tests. The worse layer decides.
How the verdict is decided
The verdict grades both layers: the paradigm this study assumes, and how the study was carried out inside it. Both must be scientific for the whole thing to be scientific. A clean method inside an unscientific paradigm is unscientific. An unscientific method inside a better paradigm is unscientific. A split on either layer is mixed. The worse layer decides.
1·Study methodology
Did this study test its claim with methods that are independent, falsifiable, and non-circular?
MIXED
This study claims that creatine powder taken daily for 12 weeks helps middle-aged and older adults gain muscle and strength and improves cholesterol, blood sugar markers, and memory, with or without exercise and dieting. The tests split.
Independently Verifiable
Fail
The body scanner gave X-ray readings and the model split them into fat and lean tissue, and the blood numbers and memory scores are the same kind of step.
Falsifiable
Pass
A creatine group that lifted no more and scanned no leaner than the placebo group would have shown up plainly in the comparison.
Non-Circular
Pass
Nothing used to measure outcomes was built from the claim that creatine works, and groups were set by coin-flip and volunteer choice, not by a test.
Why
Seventy-three sedentary adults chose for themselves whether to join an exercise and diet program, then were randomly given creatine powder or maltodextrin powder for 12 weeks. At the start, week six, and week twelve, a body scanner produced X-ray readings that the model splits into fat and lean tissue. Blood went through lab tests that print numbers labeled cholesterol fractions and HbA1c. Volunteers also took memory tests and questionnaires. Strength and endurance were counted as weight lifted and repetitions done. Software compared the two powders across all of these readings. The abstract reports the ones that moved as findings and calls the rest of the cognitive and blood results exploratory. The powder-versus-placebo split is sound. Most of what was compared is a reading the model interprets, not a body opened or a person counted.
2·Paradigm · Allopathic Medicine
Does the framework this study assumes pass the three tests?
UNSCIENTIFIC
Independently Verifiable
Fail
Health in this field shows up as scanner readings, lab numbers, and questionnaire scores, and without the medical model a cholesterol figure or a memory score is just a reading.
Falsifiable
Fail
When a powder or drug fails to move a marker, the field blames dose, duration, or who was enrolled, and never the premise that the marker tracks health.
Non-Circular
Fail
The lipid and HbA1c ranges called favorable came from earlier studies that defined risk by those same numbers, and now those ranges judge whether creatine helps.
Why
This study treats a lower lipid number, a better HbA1c, and a higher memory score as improved health. The medical model decides which readings count as health and which as disease, then judges every new treatment by whether it moves them. A treatment that moves a reading is called a benefit. One that does not is told to try a different dose, a longer trial, or another population. The model never asks what is damaging the person in the first place. It counts a shifted number as success, and the number's meaning comes from the same model that picked it. The framework cannot be wrong on its own terms.
From the study
Seventy-three healthy sedentary adults selected whether to participate in a non-exercise or exercise and diet intervention and were then randomized, in a double-blind and counterbalanced manner, to 2 × 5 g/d of maltodextrin placebo (PLA) or CrM.
At 0, 6, and 12 weeks, participants had DXA body composition determined, donated fasting blood samples, and completed a battery of cognitive tests and questionnaires.
Individual cognitive and biomarker findings should be interpreted as exploratory.