Preserving The Youthful State of Human Body
Ever since humans (and animals) reach adolescence, they start to age. Certain physiological characteristics start to diverge from norm, and that is a problem. Eventually, so far away from the norm that it results in some critical organ failure. Problem is preventing these physiological characteristics to even start diverging from norm.
Use a similar approach to what high-availability software systems use.
Collecting medical tracebacks from hospitals around the world and computing risk of deeper causes to recommend early diagnostics and lifestyle changes