Stem cell transplants helped regenerate stroke-damaged brain tissue in mice, producing new neurons and restoring lost motor function. The treatment also improved blood vessels, inflammation, and the blood-brain barrier, raising hopes that a similar approach could eventually help repair the human brain after stroke.
You can already poop in a box and mail it off instead of fingers up the ass. – https://www.cologuard.com/
GLP-1 is already a diet drug that’s available to most people.
2/3 of your hopes already exist. Maybe not for everyone, maybe it’s out of your price range, but they exist.