Thyroid Hormones (FT4, FT3): What's Optimal?

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Papers referenced in the video:
The Aging Thyroid: A Reappraisal Within the Geroscience Integrated Perspective https://pubmed.ncbi.nlm.nih.gov/31074798/

Thyroid hormones and frailty in persons experiencing extreme longevity https://pubmed.ncbi.nlm.nih.gov/32525032/

FT3/FT4 ratio is correlated with all-cause mortality, cardiovascular mortality, and cardiovascular disease risk: NHANES 2007-2012
https://pubmed.ncbi.nlm.nih.gov/36060933/

Relationship of gender and age on thyroid hormone parameters in a large Chinese population https://pubmed.ncbi.nlm.nih.gov/31576967/

Heterogeneity of Thyroid Function and Impact of Peripheral Thyroxine Deiodination in Centenarians and Semi-Supercentenarians: Association With Functional Status and Mortality https://pubmed.ncbi.nlm.nih.gov/30165411/

Thyroid hormones and frailty in persons experiencing extreme longevity https://pubmed.ncbi.nlm.nih.gov/32525032/

Association of sensitivity to thyroid hormones with all-cause mortality in euthyroid US adults: a nationwide cohort study. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10895331/