I know you've written about the positive effects that IF and Power Bias training have on the body's various hormones. I'm not an expert on this, but from reading the internets I understand that endocrine system derangement is a major cause of age-related problems and poor health: low testosterone, insulin resistance, etc. If that's the case, programs that manipulate your hormonal profile would be very valuable from a longevity standpoint.
I recall reading one article that predicted youth-extension programs would be the next major trend in health and fitness. Baby boomers will be willing to spend a lot of money to keep themselves from looking and feeling old.
"The enlightened never cease forging themselves."
-- Morihei Ueshiba