Thank you. My grandsone is 23 years old, slim, no other health problems except he is recently married, gouing to college and working. He was recently diagnosed with low testosterone and will be seeing another doctor next week. He has not inherited this condition, has not been ill at all other than the occasional cold. Does not drink, smoke, or do drugs. He is 6 31/2 and weighs 178. He works in a hospital and gets little exercise. How could this happen? Will it be treatable over the long run, and once on this type of medication will he need to take it the est of his life?