The prostate produces a thick, white fluid that's made into a thinner liquid by a protein called prostate-specific antigen (PSA). The liquid is then mixed with sperm, produced by the testicles, to create semen. If the prostate becomes enlarged, it can place pressure on the bladder and urethra (the tube through which urine passes). I was having difficulty while urinating, and difficulty starting urination so I talked to my doctor. He said I have s benign prostate enlargement is it a thing to worry about?