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Index/Organizations/life extension

life extension

Field of lengthening human lifespan by means such as tissue rejuvenation or gene therapy

Fact-Checks

2 results
Jan 19, 2026

How does dietary iodine or selenium status modify any effect of L‑tyrosine on TSH, free T4 and free T3?

Supplemental L‑tyrosine is the biochemical precursor for the tyrosyl residues that become iodinated in thyroglobulin, but the rate‑limiting steps for circulating free T4/T3 and TSH setpoints are gover...

Nov 15, 2025

best performing brain supplement

Most mainstream health outlets and specialty sites point to a small group of supplements with the best evidence or expert support for general cognitive support: omega‑3 fatty acids (DHA/EPA), certain ...