Stem cells may have potential applications for rejuvenation and life extension. As we age, stem cell functionality declines, impacting tissue regeneration and repair. Replacing aged stem cells with youthful stem cells from sources like bone marrow or umbilical cord blood could theoretically rejuvenate aged body organs and tissues over time. Further research is still needed but stem cell therapy may one day help reverse signs of aging at the cellular level.

1. The Potential Application of Stem Cells for Rejuvenation Dr Boenjamin Setiawan,Ph.D.

26. FIGURE 1. Tissue heterogeneity and stem-cell functionality for homeostasis and repair

27. FIGURE 2. Variation of maximal lifespan across species. From the following article: Stem cells, ageing and the quest for immortality Thomas A. Rando Nature 441, 1080-1086 (29 June 2006) doi:10.1038/nature04958

28. Stem cells, ageing and the quest for immortality Thomas A. Rando Influence on Stem Cell Functionality

29. FIGURE 4. Ageing of stem-cell functionality

31. Chronological and replicative ageing.