Actually, at 46 there are ways to obtain something close to a 20 year old's body, but deca alone isn't going to do it...not even close. I suggest looking into HGH, first and foremost, as well as stacking testosterone with Anavar, Winstrol or Clenbuterol, but I recommend Anavar above the other two as Anavar yields results that are not only more likely to stick with you, but also yield the least amount of side-effects and is the least toxic.