This might sound crazy, but I want to study pronging human life span. I am thinking of majoring molecular nanotechnology so that I can use this major to construct an artificial enzyme(medical nanorobot) that lengthens telomere (I know this is not the only issue of aging and death). I am not sure if we can mechanically cure somatic cells completely, and the effect will be maximized with stem cell. Is there any recommendation for human life span study career path? Cell biology, Biochemistry, Nanotechnology these three are essentials of this study I guess.. but I am not really sure.