@whovianbutatwhatcost thank youuuuuuu
So, I go back and forth on how their first body works, but I do think that their regenerated bodies remain more or less ageless for the first 300 or so years, and then for the next 200-300 that that body can naturally live, they do age but very slowly. Itâs why Four, the first one to really last that long (Two is limited by being with Jamie almost the whole time and Three by being with UNIT), does look a bit older at the end of his run. Itâs why Seven looks noticeably more worn and gray in the movie than his run. Donât worry about Eight and ElevenâIâll get to them in a minute. Notably, although they visibly age a bit and their health may decline some, theyâll still eventually collapse and regenerate regardless of how young they look or feel.
Except that to Time Lords, aging is also a stress response. A Time Lord in a constant state of panic, stress, or pain for several years will age noticeably and relatively rapidlyâstill slowly to a human, and more based on level of the stress than time passing. Also, it has an effect on their health, but once relieved of that stress makes them not much more likely to regenerate young.
I haveâŚgood Rassilon, I have at least four separate examples of this. Weâll start with the Doctor because theyâre half of them. In my headcanons, Eight lives about 450 years. Enough to age a bit, but I think it was exacerbated by 200 of those years being during the Time War when he was desperately trying to help people while refusing to fight. Hence the looking a fair bit older by the time he regenerated. And Eleven, of course, has Trenzalore. He was there a long-ass time. Longer than a single regeneration should last, although by my estimation a last regeneration can be a bit longer with the last dredges of artron energy. But even with that, his bodyâa young body, looking in his 20âsâshould really only have seemed to reach middle age. It was the stress and fear and exhaustion that aged him into a tottering old man.
My other two examples, of course, are Romana and Narvin. I think that everyone else thinks that sheâs 1500 or so when she becomes Presidentârumor being she could easily be on her third or fourth regenerationâbut really sheâs barely 400. When she arrives back on Gallifrey, when she becomes President, she looks exactly like she did on the show.
But at the end of tae, she looks more like Lalla Wardâs actual ageâto be fair, Romana probably looks a lot rougher than the real Lalla after all that tortureâand the constant stress of politics on her damaged Psyche continues to age her, though much slower than on Etra Prime. Hence Leelaâs startled note about Trey looking so much youngerâsheâs only ever known a Romana who looked over 50.
And then thereâs Narvin. No matter how you stretch it, not that much timeânot to a Time Lordâcan have passed between the beginning of Gallifrey the series and Time War. A very few centuries at most. But heâs always complaining about being too old and not fit for this anymore, and I think that while he would have aged a bit anyway, the constant mental and physical stress added to it enough to impact his health (as well as naturally-acquired disabilities).
Which reminds me, I also have a headcanon about the word âoldâ in Gallifreyan. I think they have several different words for what we would just call old: one for items on a (Gallifreyan) lifetime scale, one for items on a universe scale, one for being towards the end of or aged within a regeneration, one for being towards the end of your regeneration cycle, and oneâthe most ancient version they haveâof being towards the end of your last regeneration. Both One and Narvin use the third one when complaining about being too old for this