Peter Attia· MD
t3 goes down significantly and reverse t3 goes up significantly such that the ratio of them changes by four to six fold which means you basically shut off the metabolism
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The headline is broadly defensible, but the qualifications matter. Effect sizes vary by population, the strongest claims rest on shorter trials, and credible voices push back on how it's typically framed.
t3 goes down significantly and reverse t3 goes up significantly such that the ratio of them changes by four to six fold which means you basically shut off the metabolism
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So, I would fast for up to 7 to 10 days every quarter. ... So, I'll give you my thyroid numbers, typical thyroid numbers at the beginning before I started fasting and at the end, ... So, before a fast, I might have a TSH of two. ... a free T3 of.3 and a reverse T3 of 10. After the fast, the TSH would go to 7. The free T3 would be 02. ... The reverse T3 would be 35.
So, before a fast, I might have a TSH of two. >> Mhm. a free T3 of.3 and a reverse T3 of 10. After the fast, the TSH would go to 7. The free T3 would be 02. >> Mhm. >> So it would go down by 50%. The reverse T3 would be 35.
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