Hi, I am forty years old and have had a very high semen viscosity for about the last eight years. Why has my semen changed from a white low viscosity semen of ten years ago to a yellow very thick (jelly like) semen that really does not come out of my urethra very well during ejaculation? I have been to a urologist and really did not get a good answer other than "its just my bodies way of changing. I would really like to look into doing something to change this if possible. Thanks for your help