> Has anyone yet figured out why so many humans suffer from an allergy to many natural plants which we have lived around for millions of years?
For those of us in the Americas most of us aren't living in the same places our ancestors lived for millions of years and so are living around a different set of plants than humans evolved with.
For example I've lived all my life in the western United States, about 30 years in California and 30 years in Washington.
According to DNA testing I have very little Native American ancestry, so it is very likely that almost all of my ancestors from more than around 300 years ago were not from here. The DNA tests say my ancestors were almost all British and German, so almost all of my ancestors from 600 or more years age weren't even on the same continent that I am.
How many generations does a population have to live in a new area before they adapt sufficiently so that the native plants don't give them allergic rhinitis?
> How many generations does a population have to live in a new area before they adapt sufficiently so that the native plants don't give them allergic rhinitis?
Assuming it is even hereditary, presumably it would also have to factor into reproductive selection (you mean runny noses aren't sexy?) for that to happen?
For those of us in the Americas most of us aren't living in the same places our ancestors lived for millions of years and so are living around a different set of plants than humans evolved with.
For example I've lived all my life in the western United States, about 30 years in California and 30 years in Washington.
According to DNA testing I have very little Native American ancestry, so it is very likely that almost all of my ancestors from more than around 300 years ago were not from here. The DNA tests say my ancestors were almost all British and German, so almost all of my ancestors from 600 or more years age weren't even on the same continent that I am.
How many generations does a population have to live in a new area before they adapt sufficiently so that the native plants don't give them allergic rhinitis?