I am an older adult and like everyone in the world growing older every day. Currently no way to avoid that and even if science comes up with a way to keep our bodies younger we will still be older tomorrow than we were yesterday.
My prediction? As more of those with money age, the more attention will be paid to their needs in clinical trials. It is human nature to use whatever power you have to support your needs and interests.
My staying strong tip: Enjoy today as much as you can, it is the present most guaranteed by life.