A member asked:

I have 4 siblings, two of them are allergic to fish/seafood like me. the other two and parents aren't allergic. what makes us allergic and not them?

A doctor has provided 1 answer
Dr. John Chiu answered

Gene ; environment: Apparently it is just the right (or bad) combinations of genes which interact with the environment to make 3 of you allergic and the other 2 not. I suspect that many of you do suffer from allergic diseases such as hay fever, asthma, and eczema. Given the above information, i would expect at least one of your parents suffers from allergic diseases. Let me know if my guess is right.

Answered 10/30/2013

4.8k views

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