Very interesting and I think many have suspected as much for quite some time. Our culture of late has tended to place kids in a metaphorical bubble preventing t

Very interesting and I think many have suspected as much for quite some time. Our culture of late has tended to place kids in a metaphorical bubble preventing them from many things which current research now seems to confirm may be harmful long term in the development of healthy immune protection. In addition, based on this study, I wonder if it is worthwhile studying whether there is a "point of no return" in terms of protecting anyone from severe allergies. For instance, if you haven't been exposed to a severe potential-allergen prior to the age of 5, does it become exponentially more difficult to develop any kind of immunity that lasts long term?