Auszug
Die stets zunehmende Verlängerung der menschlichen Lebenserwartung ist ein Trend, der die Altersdiskussion begleitet. Ein Abknicken dieses Trends zeichnet sich bisher nicht ab. Andererseits hat der Zugewinn an Lebensjahren in den letzten Jahrzehnten zu einem erheblichen Anstieg an Degenerationskrankheiten geführt. Die Zahl der Menschen, die an chronischen, degenerativen Krankheiten leiden, wird sich weiter erhöhen und demzufolge die Kosten für die gesamte Gesellschaft. Trotz Fortschritten in der Erforschung der Krankheitsursachen und ihrer Behandlung (oder gerade deswegen?) werden Krankheitszahlen und Kosten auch in Zukunft weiter ansteigen (Schirrmacher, 2006). Allerdings treten die altersassoziierten Krankheiten vorwiegend bei Hochbetagten ab dem 85. Lebensjahr auf (bei dem so genannten „vierten Alter“) (Mooi & Peeper, 2006). Im Vergleich zu früher ist die Vitalität bei den Senioren des „dritten Alters“ (zwischen 60–85 Jahren) merklich erhöht. Können wir mit dem biomedizinischen Fortschritt über eine Erhöhung der allgemeinen Lebenserwartung hinaus die Lebensphase des „dritten Alters“ und vielleicht einiger Jahre des „vierten Alters“ aktiver und gesünder gestalten? Im Zuge der allgemeinen Bevölkerungsentwicklung würde dann eine Gesellschaft entstehen, in der viel mehr ältere Menschen eine aktive Rolle spielen.
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Ho, A.D., Wagner, W., Eckstein, V. (2008). Was ist Alter? Ein Mensch ist so alt wie seine Stammzellen. In: Staudinger, U.M., Häfner, H. (eds) Was ist Alter(n)?. Schriften der Mathematisch-naturwissenschaftlichen Klasse der Heidelberger Akademie der Wissenschaften, vol 18. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-76711-4_3
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