These people, I'm afraid, include those who suffer from 'wheat intolerance'. I know there is such a thing, which can afflict even the sturdiest, most no-nonsense of souls and causes the consumption of foods containing wheat to bring on unpleasant symptoms that, while not at the same level as an allergic reaction, the sufferer would still want to do something about, such as stopping eating wheat, and that wouldn't necessarily make them a tedious, attention-seeking wuss. However, I think the vast majority of people who cite the condition are tedious, attention-seeking wusses who mistake the normal symptoms of daily life - feeling sluggish after meals, tired in the morning, hungry before breakfast and generally not as though they want to leap around like someone in an advert - for there being something wrong with them. It's not just wheat they're intolerant of, it's everything. They're so dissatisfied with the sensation of being human, with the world's constant assaults on the temples that are their bodies, that they're now unwilling even to coexist with a grain.