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RE: MALARIA : A KILLER DISEASE OF THE TROPICS
They say that Africans have the most genetic diversity of all the human races.
I wonder if it because of things like malaria etc forcing people to develop new and better immune defenses to these diseases.
Europe and Asia have diseases but I don't think it is anything as ferocious as you get on the African continent.
Just a thought.
I guess it might be due to the low socioeconomic status