You will be surprised. Going into the villages up in Africa you will find tribes that live to be 90 years old average.
Now these people have never seen white people before
Exactly ! If we agree with the concepts of the evolution of an organism in a specific environment, then yes, people who stay in a specific environment long enough, will have their bodies develop defenses against certain threats like parasites.
But when you live in an environment where there are people of several ethnies and who come from several countries, foods imported from all over the world, water networks, wastes networks, people who travel often, foods handlers who are infected, then in this case my french body from Haute Savoie has not had the time to develop defenses against parasites from others parts of the world.
but the people that say it cannot be done is irritating the crap out of the people already doing it. Truth is they are full of parasites with only the body itself to fight it.
Show me proofs that some people can have a immunity to all kinds of parasites from all over the world and i will believe it. The studies and the facts show the contrary.
The bible is not a reliable source of information, considering how many times it has been rewritten and by who it has been rewritten (the same people who burned the thinkers and the inventors in the 18th and 19th century.)