I think one key factor is that most men have a complacent attitude about getting their health checkups. They wait way too long to get checked out and even that do not go to the follow up appts. I speak from first hand knowledge about one loved one. So what do you think the reasons are?
Shrimp for me. I took one bite and had to spit it out. It didn't help that my dad said something about them being in the spider family(he was a big jokester). Never again.