Will vasectomy make a man loses his sexual ability? Will it make him weak or fat? Top
No. After vasectomy, a man will look and feel the same as before. He can have sex as before. He can work as hard as before, and will not gain weight because of vasectomy.  
Does a man need to use another contraceptive method after a vasectomy? Top
Yes, for the first three months, or 20 acts of sex the couple has to use any temporary method of contraception. This is because the remaining sperm is either absorbed or ejaculated during this time. The man can use condoms for protection. If his wife has been using a contraceptive method, she can continue to use it during this time. Not using another method for first three months is the main cause of pregnancies among couples relying on vasectomy. After three months, the client should go for semen analysis. If result of semen analysis shows azoospermia (zero sperm count) then the man does not need any other method of contraception. He is sterilized now.  
Will vasectomy stop working after a time? Top
Generally no. Vasectomy is a permanent method of contraception. If azoospermia (zero sperm count) is achieved then it will not stop working. In rare cases, however, the tubes that carry sperms will grow back together, and the man will require a repeat vasectomy.  
Can a man have his vasectomy reversed if he decides that he wants another child? Top
Generally no. Vasectomy is intended to be permanent. People who may want more children should choose a different family planning method. Surgery to reverse vasectomy is possible for only some men and reversal often does not lead to pregnancy. The procedure of reversal is difficult and expensive, and providers who are able to perform such surgery are hard to find. Thus vasectomy should be considered irreversible.