I have noticed that generally people that grow up in relatively unhygenic places tend to have a better immune system compared to those that don't. However, not just growing up in a hygene environment makes your immune system weaker, but living there for 2-3 years is enough to get you many allergies. LOL, well basically I have this friend who lived all her life in India, like me...and came here after grade 10, compared to me who came 2 years later. In India she never had any allergies...and here she has at least 4-5. It seems very strange though, coz I would expect her to have no allergies compared to those living here all their lives...so I am not sure if she is an exception to my theory, orrr it depends on each person's immune system and you can't generalize it. 😕
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