Hi Joe,
I must admit I agree with Brian, you are to young to burden yourselves with this stress and worry, get out and enjoy your lives just now and forget this for the moment.
As I myself was diagnosed with Prostate Cancer at 56 I asked my specialist nurse when my son should be checked and she said 50. I don't agree with this as I know men who have it in their early forties. I have since spoken to another Prostate Cancer UK nurse, and she said as the son of a man diagnosed with PCa he is 2 1/2 times more likely to get it than normal. She has therefore recommended he gets checked from the age of 40. which he is going to do, they currently test men for it at this age in Canada. I would suggest you and your brother go and get checked when you are both 40.
Good luck and best wishes to ALL who are fighting or affected by cancer.
Regards,
Gerry.