Although many people bite their nails occasionally, repeated and compulsive nail-biting can cause long-lasting harm.

A few weeks ago, my husband and I went to the Natural History Museum of Utah’s Bugfest — an annual event that introduces us humans to the wriggling masses of critters with whom we share this planet.

That sharp pain when teeth accidentally clamp down on your tongue is a sensation most people know all too well. While occasional tongue biting during meals is a common annoyance, frequent or recurring ...