Stop Blaming Your Thyroid for a Crime It Didn’t Commit
Most people think the thyroid makes all the Thyroid hormones it needs for energy and metabolism. But that’s not the full picture What Your Thyroid Produces - Your thyroid produces virtually all of your body’s T4 (thyroxine) — the storage form of thyroid hormone. - It also makes some T3 (triiodothyronine), the active form that revs up metabolism. - But here’s the catch: only about 20% of your T3 comes directly from the thyroid. Where Most of Your T3 Comes From - Roughly 80% of your active T3 is made outside the thyroid in your peripheral tissues. These include - - Liver – the main hub for T4 → T3 conversion - Kidneys – important secondary site - Skeletal muscle – regulates local energy - Gut & microbiome – essential for proper activation - Brain & nervous system – ensures local supply of T3 - Fat tissue – influences metabolism and energy balance These tissues act like factories, taking T4 from the thyroid and converting it into the active, fat-burning, energy-producing T3. Here's the Limiting Factor that no one really talks about. The Reverse T3 Factor (RT3) - Sometimes, instead of making active T3, the body converts T4 into Reverse T3 (RT3). - RT3 is inactive — it binds to thyroid receptors but blocks T3 from working. - Stress, illness, toxins, and nutrient deficiencies can all push conversion toward RT3. FitnHealthy Tip - Your thyroid makes the raw material (T4 and some T3).But the real control over metabolism, energy, and fat loss happens in your liver, gut, kidneys, muscles, brain, and fat tissue. If you only look at the thyroid, you miss the bigger picture of thyroid conversion and the role of stress, nutrients, and lifestyle in keeping your metabolism strong. If Roughly 80% of your active T3 is made outside the thyroid in your peripheral tissues, do you want to know more about how best to make that happen? What to test for? Why?