USUS·CBS NewsHe couldn't eat. It was the warning sign of a rare conditionEd Langevin liked the simple things in life — until painful symptoms started haunting him.Lean LSep 20Read at CBS News→USUS·CBS NewsHe couldn't eat. It was the warning sign of a rare conditionEd Langevin liked the simple things in life — until painful symptoms started haunting him.Lean LSep 20Read at CBS News→