To be totally honest, I found this hard to follow , but, from what I do understand its interesting.
Like many studies I drop on here, I imagine dropping them in to a large box marked:
'new possible ideas for cause/cure of allergies' and this one is different.
I dont understand why he said the last 50 years that something has changed to produce this allergy wave. If genes can be influenced by environment why assume the damage was started with this generation? What if it started with our grandparents? city living, rise of motor/coal transport (the 'pea soupers' of london killed thousands btw) kicked started it all and finally the rise of eczema, asthma, and other diseases that we havent linked. After all low vitamin D has been linked to MS and other conditions, what if that's the link?
See? one theory just sparks of another. I like the fact that this study is at least looking at things from a slightly different angle. And honestly we need fresh views on this, the tolerance 'cure' isnt going to make much of a difference for those with long lists of allergies. At least I didnt feel like screaming this time when a study mentions anything about the hygiene theory this time!