Live·Open questions in longevity research

Organ structure

Skin tissue

Tissue comprising the epidermis, dermis and skin appendages, with vascular and nerve connections

Hypotheses on this target 4

Skin tissueFunction restoration. Hypotheses on this target 22Remodelling. Hypotheses on this target 0Tissue graft. Hypotheses on this target 22Load normalisation. Hypotheses on this target 0

Function restoration2

  • Local maintenance may interrupt accumulating random skin-function deviations before youthful limits

    Where this hypothesis actsEpidermis, dermis and appendages during initial restoration and ten years of local maintenance

    What is proposedRestore skin structures and maintain their functions within young reference ranges

    With whatNot stated in the record

    HowR_P proposes restoring existing cells; R_T proposes tissue replacement. Each alternative includes limited local maintenance; biological implementations remain undeveloped

    Possible resultPossible maintenance of all skin functions for ten years within predefined maintenance burden and risk limits

    2026-09-25

  • Aging skin can sustain youthful function without rejuvenating its resident cells

    Where this hypothesis actsAcross every applicable anatomical-site stratum, with persistently old resident cells

    What is proposedRestore the biological state coordinates C01–C16

    With whatNot stated in the record

    HowRestore each coordinate across at least 95% of its eligible area, volume or resident structures in every applicable anatomical-site stratum; coordinate identities are not stated

    Possible resultPossible twenty-year maintenance of youthful skin performance during repeated combined challenges

    2026-09-21

Tissue graft2

  • Targeted small tissue grafts may restore skin function by reconnecting surviving tissue

    Where this hypothesis actsSites of broken connections between retained functional regions of the epidermis, dermis and skin appendages

    What is proposedReplace the minimum set of tissue sites needed to reconnect functional regions

    With whatPhysical or surgical intervention

    HowPlace complete autologous micrografts using a tissue connectivity map, replacing ≤10% of regional skin volume; assess annually and replace disconnected sites at ≤1% per year

    Possible resultPossible restoration of coordinated skin function across the region, including the retained ≥90% of tissue

    2026-09-26

  • Distributed skin micrografts may restore surrounding skin through complete functional units

    Where this hypothesis actsAgeing skin across the treatment area

    What is proposedPartially replace skin with complete, spatially distributed microtransplants

    With whatPhysical or surgical intervention

    HowIntegrate complete skin microtransplants on a triangular grid, replacing about 13.4% of the area; replace lost units at most annually without increasing their initial number

    Possible resultPossible restoration of skin functions throughout the area, extending to three graft radii around each unit

    2026-09-25