> It's not an organ that's been believed to be vestigial, like the appendix. Not... | Hacker News

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outworlder on Aug 11, 2023 | parent | context | favorite | on: Turns out lowly thymus may be saving your life

> It's not an organ that's been believed to be vestigial, like the appendix.

Not vestigial evolutionary speaking, but doesn't it get less and less functional over a person's lifespan and gets replaced with fat tissue?

echelon on Aug 11, 2023 [–]

Yes. This is why T cell activity decreases as one ages. The thymus is where naive T cells are generated, and the output dramatically slows after adolescence.

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