You’re still blending distinct domains as if they’re interchangeable. They’re not. That’s the root error.
A. Biochemistry (What is)
Molecules like potassium, B12, Ferritin, IGF-1, cortisol, melatonin, etc. have fixed, known, mechanistic actions. They do not require belief, consensus, or an RCT to function.
Eg.
B12 deficiency leads to elevated MMA leads to impaired Methlmalonyl-coa mutase
Potassium deficiency leads to membrane polarization leads to arrhythmia
Iron deficiency leads to hemoglobin synthesis reduction leads to fatigue/hypoxia
These are not contested. They’re biochemical first principles.
B. Epistemology (How we Know)
Correcting a measured deficiency is not a ‘belief system’ - Deficiency leads to biomarker shift, the resolution of which is mechanistic causality, not faith. No one demands RCTs for fixing the above examples: B12 deficiency, iron deficiency, hypokalemia etc. These are not probabilistic questions; they’re constraint-based physiology.
C. Regulation (What FDA Requires)
FDA rules govern claims and marketing, not the laws of biology. Regulation is not the arbiter of truth, it is, in fact, an arbiter of liability.. Conflating FDA process with biochemical validity is a category error.
D. Therapeutics (Application)
Clinical practice is not limited to ‘what has an RCT.’ Medicine corrects deficiencies every day using biomarkers and mechanisms, not belief. If your standard were applied universally, 80% of conventional medicine would disappear.
Your assertion:
No RCT = belief
collapses four different domains into one.
So biochemistry is not validated by belief; Mechanisms are not contingent on regulation. Deficiencies are not treated via philosophy.
Gravity does not require peer review for the apple to fall. Citrus was used to treat scurvy before anyone knew what Vitamin C was etc. Biology precedes discovery. Discovery precedes regulation and none of it depends on what a person believes. That is the entire point.
You are not wrong about the dangers of the supplement market nor about FDA history or placebo effects…
But you are absolutely wrong for calling biochemistry ‘belief’, requiring RCTs for biochemical causation, equating regulation for scientific truth, confusing therapeutics with physiology and collapsing different categories into a single bucket - you’re arguing adjacent to my points.
If you can sell bedpan bullets in lieu of vitamins and get 4-5 stars, that speaks to consumer gullibility not biology.