> I suspect that the introduction and then disappearance was worse than not introducing it at all I'm not convinced that we understand the human immune system

> I suspect that the introduction and then disappearance was worse than not introducing it at all I'm not convinced that we understand the human immune system quite that well. Speaking as someone with three kids and (sadly) quite the handful of apparently inherited medical conditions in the family. As it stands we have: * coeliac (me, plus two of the three kids... and the third kid already tested positive on the coeliac genetic test) * childhood asthma (me, plus one of the three kids) * severe allergies (me, plus two of the three kids) No nut allergies, so far. We're still counting :/