@Faceless One It's not that hard in theory. The main reason our cells start breaking down is the telomerase caps at the ends getting shorter and shorter. Some cancers trigger when the telomerase shortening doesn't function properly, and those cells are frighteningly long-lived, since we're dealing with something that damages the body in such cases.
Other reasons our bodies wear out is dealing with the effects and aftereffects of injury, disease, and parasitic creatures, and not getting proper nutrition, especially in childhood. Cultivation stories deal with this with, after a certain point, having the energy heal all such damage and feed the cells directly, while also repairing them. While less direct and in more pieces, certain kinds of fantasy and science fiction techniques do the same thing.
Science fiction especially has scenarios of being able to feed everyone properly while not destroying the planet. (Soylent Green does not qualify here, btw. That was a dying planet with the people driven to desperation.)
You can see this in the current day. More people manage to live until they're old without many or any major health crises, and they're in better health as they age.
(I note parasitic creatures specifically, since campaigns against them have resulted in major changes to a population's health within one generation.)
Other reasons our bodies wear out is dealing with the effects and aftereffects of injury, disease, and parasitic creatures, and not getting proper nutrition, especially in childhood. Cultivation stories deal with this with, after a certain point, having the energy heal all such damage and feed the cells directly, while also repairing them. While less direct and in more pieces, certain kinds of fantasy and science fiction techniques do the same thing.
Science fiction especially has scenarios of being able to feed everyone properly while not destroying the planet. (Soylent Green does not qualify here, btw. That was a dying planet with the people driven to desperation.)
You can see this in the current day. More people manage to live until they're old without many or any major health crises, and they're in better health as they age.
(I note parasitic creatures specifically, since campaigns against them have resulted in major changes to a population's health within one generation.)
The Galactic Navy Officer Becomes an Adventurer
by Takuma Tomomasa , A_Itoh
Available on mangabuddy for reading, and for sale at https://www.amazon.com/dp/B0BT6V7CMM
by Takuma Tomomasa , A_Itoh
Available on mangabuddy for reading, and for sale at https://www.amazon.com/dp/B0BT6V7CMM