Watch: RHOC's Emily Simpson Emotionally Details 10-Year-Old Son's Rare Eating DisorderEmily Simpson is putting family first. After sharing that her 10-year-old son Luke was diagnosed with the rare eating disorder ARFID-or Avoidant/Restrictive Food Intake Disorder-The Real Housewives of Orange County star revealed how Luke's health battle affected her and husband Shane Simpson's other two kids, daughter Annabelle, 12, and Luke's twin Keller.