Hello @lirvic, how is Venezuela today my friend? I hope you are doing alright. After reading this post, I understood that you are concerned about the challenges that comes with aging. I can readily tell you that fear over matters like that only makes it worse and destroys the mind. Even when in a comma, the doctor depends first on you mind to be strong and not give up. Same thing happens when bad things come. We should face it head-on and simply prepare for it.
For the nutritional items you talked about, it narrows it down to protein and vitamin based foods. These essential things helps protect and even glitters the aging skin. Yo crown it all up, yoga and cardio exercises are very good combination not only for the aging, but also for the younger ones if possible. It keeps everyone more fit than they ought to be at their age.

Good luck