What does a student facing exam pressure have in common with a World War I soldier—or an 18th-Century British sailor? More than you might think. Kids surviving on junk food and stress are at risk of two retro tooth-and-gum woes: trench mouth and scurvy. Trench Mouth (named for the soldiers) is better known today as ANUG, or Acute Necrotizing Ulcerative Gingivitis. While it's similar to periodontal disease, what sets ANUG [...]