Jan Patenaude, R.D.
For more than 2000 years, sulfites have been used to prevent food spoilage and discoloration. Perhaps for nearly as long, they've played a more sinister role - causing allergic-type reactions in some of the people who consume them. Ellen Wiest is one such individual. She often suffered from headaches, severe nasal congestion, abdominal cramps and diarrhea after eating. But she didn't connect her symptoms to sulfites, until one June evening in 1995.