Multiple Sclerosis Gene Mutations Were Originally a Positive Evolutionary Adaptation

[Igor_Passau]

http://www.medicaldaily.com/article...crohns-gene-mutations-positive-adaptation.htm

 

[kiny]

The hygiene hypothesis suggests that childhood exposure to germs in the environment can help strengthen the immune system against and protect children from developing allergies later on. Without early exposure to bacteria, children may become more vulnerable to inflammatory and autoimmune diseases.

That theory stops making sense when you look at Indians who come to the UK and develop crohn's disease.

Africans who never had crohn's disease in their tribe, followed when they immigrated into Europe and they develop crohn's disease.

Moroccans and turks, they move to Europe and they develop crohn's disease at higher rates than the locals.

If early exposure to bacteria actually protected them they wouldn't be getting crohn's disease, but they all do, they are no more protected than anyone else in the West, in fact in some countries they seem less protected, some are developing crohn's disease at higher rates than local Europeans after immigration.