You create an account on an instance/server. Your account is on piefed.social, which is a PieFed instance. However, you should really think of this as your piefed.social account, not as your PieFed account. You cannot login into PieFed with your Mastodon account, because you don't have a "Mastodon Account"; You may have an account on a particular Mastodon instance (or server, whatever they call it), which allows you to login to that particular instance.
Mastodon, PieFed, Lemmy, etc. are more like the filter through which you interact with the Fediverse. To a Mastodon server, every post is independent, for example. On Lemmy, you may post to a community, but on Mastodon a community is just a group that boosts posts made to it.
The way I do it, and the way I think is best, is that you should pick a way you prefer to interact with the Fediverse. Do you prefer threads like Lemmy or PieFed? Do you prefer single posts to the void like Mastodon? I don't really know how Bookwyrm works, exactly, but it's also just a way to interpret the same underlying stuff so that it can be understood as books and book ratings and reviews.
There may be features missing or not implemented here and there, depending on the instance or the software.
I only really use my Lemmy account (the one I'm using right now), because I prefer threads. Some people even call Lemmy and PieFed (and some others) the Threadiverse.
There's no wrong way. Just have fun. But be warned that any account on a different server is exactly that: a different account! And each account lets you interact with a server, meaning that you see the Fediverse thru the eyes of the software it's running, be it Mastodon or Lemmy or whatever, and everything will be filtered that way.
Cancer is when a cell's DNA is damaged and it starts behaving badly. Monstrously huge generalization, but that part is right. But the key is that the damaged DNA results in uncontrolled cell division (mitosis)! That's what causes cancerous tumors. It's not really that the cells stop doing their job, though they do stop doing their job, but it's mostly that they grow uncontrollably and destroy the surrounding tissue.
That being said, yes, we could fix some genes. However, cancer is hugely complex. It's not really one thing, even; It's just what we call the outcome of a very unfortunate sequence of DNA damage. Some specific kinds of cancer, maybe, could be helped with this.
Maybe we can help prevent cancer by changing some genes, in particular cases, even. But curing cancer, at least thru CRISPR gene editing, doesn't seem, to me, to be viable.
Oh, and about the telomeres! That's not all that aging is, for one, and the way it works isn't even totally clear. It's just not that simple!
I hate birthdays so I hoped to do nothing. My parents didn't quite respect that, but they didn't do much, thankfully... Just a small "party", nothing very memorable, thankfully.
Good luck with the embodiment of greed over there lol And happy birthday!
Beer costs more than food... I've no words.