Nail biting, Thumb sucking: Not so ‘bad’?

Children who are thumb-suckers or nail-biters are less likely to develop allergic sensitivities, new research has found. And, if they have both 'bad habits', they are even less likely to be allergic to such things as house dust mites, grass, cats, dogs, horses or airborne fungi. The research, published in the journal Pediatrics today, was ["]