Thyroid & thermogenic substrate
One of 6 mechanistic pathways to 🔥 Lose fat · 8 options
Thyroid hormone sets the floor under resting metabolic rate. If that floor has dropped — from dieting, from illness, from age — no amount of appetite suppression fixes the arithmetic. This pathway is about the denominator, and it is the one most worth testing before treating.
The one pathway you should never guess at. Normal TSH with low free T3 and high reverse T3 is the classic dieting-induced conversion problem — the metabolic rate has dropped and no appetite suppressant addresses that. Equally: if thyroid is genuinely fine, this whole pathway is money spent on a problem you don't have.
TSH (Thyroid-Stimulating Hormone)Free T3 (Triiodothyronine)Free T4 (Thyroxine)Reverse T3IodineSelenium, Blood🦋 Thyroid — First Look 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.
🧬 Iodine
The literal substrate for T4 and T3. Deficiency causes hypothyroidism; excess causes it too. This is a test-first nutrient, not a try-it nutrient.
🧬 Selenium
Cofactor for the deiodinases that convert T4 into active T3. Deficiency impairs conversion — meaning normal T4 with low T3 and a flat metabolic rate.
🧬 Zinc
Required for thyroid-hormone receptor function and for T4→T3 conversion. Also depleted quickly during aggressive dieting.
🧬 Thyroid Support
A cofactor blend — iodine, selenium, tyrosine, guggul. Rational for supporting conversion; not a replacement for hormone where hormone is what's missing.
🧬 L-Tyrosine
The amino-acid backbone of thyroid hormone and of catecholamines. Supplying substrate helps only if substrate was short.
🧬 Guggul
Guggulsterones increase T4→T3 conversion in rodents. Human data is weak and it interacts with a long list of drugs.
🧬 Kelp
Whole-food iodine source with wildly variable content and a real heavy-metal question. Dose control is the problem.
🧬 MCT Oil
Medium-chain triglycerides bypass the lymphatic route and go straight to the liver for rapid oxidation, with a small measurable thermic effect. Real, and small enough that it will not rescue a bad diet.
The other 5 routes to lose fat
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
Thyroid hormone sets the floor under resting metabolic rate. If that floor has dropped — from dieting, from illness, from age — no amount of appetite suppression fixes the arithmetic. This pathway is about the denominator, and it is the one most worth testing before treating.
8 options are mapped to this pathway in the Vault, including Iodine, Selenium, Zinc, Thyroid Support. They are grouped by the mechanism they act through rather than ranked by how much trial evidence exists — 3 carry clinical validation and 4 are mechanistic predictions.
The one pathway you should never guess at. Normal TSH with low free T3 and high reverse T3 is the classic dieting-induced conversion problem — the metabolic rate has dropped and no appetite suppressant addresses that. Equally: if thyroid is genuinely fine, this whole pathway is money spent on a problem you don't have. The markers worth checking are TSH (Thyroid-Stimulating Hormone), Free T3 (Triiodothyronine), Free T4 (Thyroxine), Reverse T3.
Unproven is not the same as ineffective. Of the 8 options on this pathway, 3 have clinical validation and 4 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.