I believe Lupus is caused by exposure to radiation. My wife, her sister, mother, and step dad all have thyroid problems. I've read that thyroid disease is one of the first signs of radiation exposure. I question my wife about where her and the family lived when she was a child. She said Simi Valley. Turns out Simi Valley had a radiation leak that caused a class action lawsuit. I also questioned a Lupus group on fb about the possibility of any of them being exposured to radiation. The responses were shocking. I'm convenced, but will continue to study this.