Sure, its called Hormone replacement therapy. I wouldn't just start like this though. You want to have a plan. You want to know where your blood work is and make sure that you are safe. Still HRT is not cycle doses. It's far less. You need lab work to know what your needs are to keep test in the normal range. What I'm taking about though is very different than running gear at muscle building doses forever. You have to understand that what you are feeling wont last forever. Over time, it will take more and more to get the same effect and to just feel normal. There is always a ying to the yang. Even on HRT, you want to cycle up and down. For someone your age, this might work out fine but for younger guys, they will want to come off or risk messing up their natural production of test forever