Captain Robert April wrote:
Excellent example. Compare Kirk at the physical age of "between 60 and 72, aging rapidly" and Bill Shatner today at age 80.
Further, check out Spock "on the high side of 100."
'The Making Of Star Trek' (which seems a reliable enough source usually) states that, for 'The Deadly Years' make-up, Bill Shatner refused outright to be "aged" quite as much as the other actors. Make of that what you will.