Antibody

[victor]

Why animal antibody is stronger than us humans? Just see when animal is drinking at the pond...it's sure that if we also drink that water, we will get stomachache isn't it?

[mith]

I'm sure if we started living in a dirty environment, eventually only the healthy would be left.
But since humans have created cleaner environments, there's not such a big advantage to have higher constitution(to borrow a term from d&d).

We can even see the results of overly hygenic conditions. In America, everything u buy is antibacterial--Antibacterial soaps, clothing, tissue paper etc...
Some scientists have attributed allergies to this hyper-clean environment. Because the young child's immune system is not exposed to pathogens and therefore is not trained to deal with infections, it might mistake it's own cells and attack them.

[MrMistery]

Mithril is right. Evoultion acted as a brake fator for humans, since we do not let natural selection do it;s thing any more. In the stone age people with bad eyesight would probably die because they could not hunt so well. Nowadays they get glasses and make kids(glad for that since i wear glasses).
Same thing with antibodies. In nature animals with weak immune systems die, humans with weak immune systems simply take mor pills. We have focused so much on the good of the individual that we have forgot to take a look at the good of the species