I would not be surprised if another "sensitizing culprit"-- childhood vaccines-- might have something to do with an increase in allergies of all kinds, including peanuts.
We are imposing highly toxic materials into the vulnerable immune systems of babies, and then expect them to come away unscathed. I do not believe the human immune system was designed to handle these toxins at such a young age, and so many given at once.
There have been links to autism, SIDS, allergies and asthma related to vaccines. Try the National Vaccine Injury website. I think they have good info on this.
Basically I think our immune systems are all screwed up, and the most vulnerable would logically be people who as babies were not given immune-protective human mother's breastmilk, and loaded with vaccines in the early stages of life. It would not seem illogical that hypersensitivites to ordinary proteins such as peanuts would result.
That may be true; however, I do not believe in the autism link. Four large studies done in different counties found no link whatsoever. That is not to say that some kids do not do well with vaccines. The alternative would be hundreds of thousands suffereing (and thousands dying) from polio, whooping cough, diphtheria, etc.