Test before you guess
One of 4 mechanistic pathways to 🧭 I'm starting from scratch · 7 options
The single highest-return move in this entire Vault is a blood panel. Half the things people take speculatively are correcting a deficiency they don't have, and a third of what would actually help them is invisible without a test.
Every nutrient here is harmful in excess as well as in deficiency, which is exactly why guessing is the wrong move. Iron and iodine are the two that most reliably hurt people who supplement them without looking first.
FerritinIron Panel (Iron, TIBC, Transferrin Saturation)Hereditary Hemochromatosis, DNAIodineSelenium, BloodZinc, RBCCopper, SerumVitamin D (25-Hydroxy)Vitamin B12Methylmalonic Acid (MMA)✅ The Basics — Start Here covers these in one panel →
What engages this pathway
Ordered by how directly each one acts on the mechanism above — never by how much trial evidence exists. Each links to its full breakdown with dosing, half-life and vendor.
🧬 Iron
Never supplement iron without testing. Deficiency is a leading cause of fatigue and hair loss; overload is genuinely damaging and men and postmenopausal women rarely need it. This is the clearest test-first nutrient there is.
🧬 Iodine
Both deficiency and excess cause thyroid dysfunction, and in autoimmune thyroid disease high-dose iodine makes things worse. Test-first.
🧬 Methylcobalamin (B12)
Serum B12 misses functional deficiency — methylmalonic acid and homocysteine are the sensitive markers, and the neurological damage from missing it is not fully reversible.
🧬 Vitamin D
The one worth measuring twice a year, because the right dose varies enormously by latitude, skin tone and body composition.
🧬 Zinc
High-dose zinc induces copper deficiency over months — a real and under-recognised harm from an otherwise benign supplement.
🧬 Copper
The mineral zinc supplementation depletes. Usually the fix is less zinc rather than more copper.
🧬 Selenium
The therapeutic window is narrower than most supplements, and toxicity is real at a few multiples of the useful dose.
The other 3 routes to i'm starting from scratch
Pick the pathway that matches where you are actually stuck. An appetite drug does nothing for someone who already undereats.
Want the protocols behind these?
Dosing schedules, stacking, cycle timing and Coach Cam's notes live inside the Academy — plus the full interactive Vault.
Join the Academy — $10/mo →← Open this pathway in the interactive Vault
Frequently asked questions
The single highest-return move in this entire Vault is a blood panel. Half the things people take speculatively are correcting a deficiency they don't have, and a third of what would actually help them is invisible without a test.
7 options are mapped to this pathway in the Vault, including Iron, Iodine, Methylcobalamin (B12), Vitamin D. They are grouped by the mechanism they act through rather than ranked by how much trial evidence exists — 7 carry clinical validation and 0 are mechanistic predictions.
Every nutrient here is harmful in excess as well as in deficiency, which is exactly why guessing is the wrong move. Iron and iodine are the two that most reliably hurt people who supplement them without looking first. The markers worth checking are Ferritin, Iron Panel (Iron, TIBC, Transferrin Saturation), Hereditary Hemochromatosis, DNA, Iodine.
Unproven is not the same as ineffective. Of the 7 options on this pathway, 7 have clinical validation and 0 are graded theoretical — meaning the mechanism is sound but the specific human trial has not been run, which is true of a great deal of what works in this space. Nothing on this page is ordered by evidence tier, because sorting by trial count would bury the compounds you came looking for.