To create a drug that turns back the clock on ageing? For instance you take it when your 60 and you start to take it and in 5 years you look physically like your 40?

Stopping the ageing process is very complicated. From what I’ve read, we don’t know for a certainty if it is even possible, but within a hundred years or so, we will know. The problem, simplistically, is when you patch up one area of the ageing process, you tend to exacerbate other problems such as certain cancers. A drug that modifies genetics in such a way as to stop the ageing process is definitely possible (probably likely), but not guaranteed.

To reverse ageing, would be far more complicated still. However, ageing is simply numerous things going wrong with your body at once. If it becomes possible to stop ageing ( or at least significantly slow it down), then certainly a combination of drugs and surgery would not be far behind to reverse many signs of ageing. ( Of course, I'm not speaking of cosmetic surgery, which already does this, but some sort of drugs/surgery combination that actually reverses ageing).

Its going to more than just one drug. A therapy will be created to reduce reverse the effects of aging.

Stu

Reversing aging is a technical challenge, No reason it should not be possible, but even if it is possible that does not mean we will manage to achieve it.

However I doubt that a single drug will reverse aging, likely some form of gene therapy would be involved plus a range of drugs and other forms of treatment still to be devised.

Mhhh I would think biological life is only capable of aging forwards. How would you ever be able to turn back the clock after a menopauze, back to fertility?

I also think we can't ever stop aging, just make the regeneration process faster, and the aging of cells very very slow, till it looks like a stagnant dormancy.

i read in a previous post that some turtles live to about 140 years old or something crazy like that and the reason being is because they don't find a mate for so long and they dont reproduce much, so to counter this they live longer lives. How does this not apply to humans? How does that differ from someone who remains abstinent for their entire life??

Slowing aging: healthy eating/living. Beyond that, it's possible to slow further, the extent of which depends on technology/medical advances. Regarding OP, I think reversing is not possible because of entropy and other things, unless we spin up our FTL drives.

nanotech imo.

Gentlemen, we can rebuild him. We have the technology.
...
Better than he was before. Better, stronger, faster.