I think more research needs to be done on viruses such as mono(EBV), Cytomegalovirus (CMV). Most doctors say everyone has it but what they miss out on is that if you get it when you are pre 18 yrs old or a kid your body recovers . And it does not affect your health as much.
But if you get it in your mid 20s or early 30s it destroys you and your body. You do not die immediately but over time you are 50% of what you used to be. Your strength diminishes , muscles, concentration body all go down. YOu develop IBS and your life is never the same.
Lets take a look at Mario(EBV), Henin(CMV) and Soderling (EBV) at careers destroyed by this group of Herpes 6 family of viruses. I know quite a few people in the same boat and it is soul destroying for them.