Capsaicin's positive effects are modest. But they are real. All of this is to say, the obsession with chili pepper heat may be a fad. Or a form of masochism. But it may also reflect -- for once -- popular taste and nutrition in a happy alliance.
Sometimes I've been surprised as I was when I once ordered the Little Beast Burger with red onion bacon jam and maytag bleu aioli. It was plump and juicy and simply one of the best burger experiences I've ever had.