There's no medical evidence that says that eating boogers actually benefits your health.
Actually when you eat your boogers you can increase your chance of getting sick from eating the boogers because of germs and bacteria on your fingers etc.
Your boogers contain bacteria and germs that are supposed to be out of your system and you're supposed to remove those boogers or blow the mucus or snot out of your nose.
So by picking your nose and eating those boogers you introduce that bad bacteria back into your body through your mouth which is actually not very good for your health at all.
I used to eat my boogers as a kid and it never made me any sicker but it certainly was not doing my body any good and I eventually stopped eating my boogers once I turned 8 years old.
I think about all the times I've eaten my boogers as a kid and now I believe it's disgusting.