could well be some connection to chemicals used in food processing or agriculture. harmones, steriods, antibotics, cultures, --you name it !
science needs to look at everything with a fine toothed comb.
science is just now beginning to understand genetics and gene function.
something may well be turning on the "kill everything & every one" gene.
if humanity is to survive we have to find out what the hell is going on.
if no one looks at the problem were going to have ever increasing numbers of murderous nuts coming out of the woodwork --with dire consequences.