Amyotrophic lateral sclerosis (ALS), also referred to as Lou Gehrig’s disease, is a diverse and mystifying disease. In more than nine out of every 10 cases diagnosed, there’s no clear identifying cause – most patients are without the affected family members that signal an obvious genetic history. Also, nothing about the way patients live their lives gives clues to what causes ALS. Nothing, so far, in patients’ diets, where they’ve lived, how they’ve lived or what they’ve done with their lives seems to explain why they’ve developed this late onset, fully developed, progressive disease.