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2.2: Theory 1- Aging by Program

  • Page ID
    84798
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    • There is strong evidence supporting the suggestion that aging is in some manner programmed into each species, including humans.
    • This may be controlled neurologically or hormonally through the hypothalamus.
    • Other studies suggest that aging is controlled by the thymus.
      • The gland atrophies at about the onset of adolescence. This implies that aging occurs more readily in the absence of the thymus gland.
    • In studies cultured cells of a specific type divided a consistent number of times. This implies that the cell’s life cycle is controlled within the cell, rather than externally by the hypothalamus or thymus.
      • Scientists agree that although normal cells may have a limited number of times they can divide this is only rarely, if ever, reached in the body.

    Contributors and Attributions

    CC licensed content, Original
    • Theory 1: Aging by Program. Authored by: Kelly, Jessica. Provided by: Herkimer College. Located at: NA. Project: AtD Course. License: CC BY: Attribution

    2.2: Theory 1- Aging by Program is shared under a not declared license and was authored, remixed, and/or curated by LibreTexts.

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