> Maybe just live in a third-world country for 2 weeks or 2 months, eating local street food, raw fruits, drinking local water would be easier and more effective to acquire 'necessary' parasites (along with parasites' cultivation conditions) to subdue such immune system 'imbalance'?
This is also a good way to make yourself really really sick. You can end up with hepatitis A, amoebic dysentery, cholera, typhoid, etc.
Or even if it’s just giardia and cryptosporidium (I assume these are among the “necessary parasites”?) folks who are immune-comporomised can end up in real danger.
autoimmune diseases and immunodeficiency are two pretty different things. also the infections you listed here pretty much could be prevented or with specific treatments available. MS & celiac disease don't.
This is also a good way to make yourself really really sick. You can end up with hepatitis A, amoebic dysentery, cholera, typhoid, etc.
Or even if it’s just giardia and cryptosporidium (I assume these are among the “necessary parasites”?) folks who are immune-comporomised can end up in real danger.