Jeepers. Is it me, or are allergies to just about everything more prevalent these days??? I don't remember all the dietary allergies being around when I was in grade school...
I think it's definitely more prevalent. Used to be that people like me, who had childhood allergies and asthma, would just die before we got old enough to reproduce. But with modern treatment I grew up and have two kids, both of whom inherited my allergies and asthma. And they're both going to grow up and reproduce, and so it will go, spreading throughout the gene pool.
I was wondering the same thing. A PB&J was the universal sack lunch back in my 1960s elementary school days. I wonder what has changed?