Chinese Drywall

We purchased a brand new home with Chinese Drywall. We were not told by builder about the drywall, but found it while searching for something else in attic. Builder did admit to putting it in and produced a report that stated the few sheets that were tested had no significant levels of sulfur emission, but higher than 1200 PPM strontium levels. We have had health issues and electrical issues. Can these be directly linked? How much compounding is done on 1200 PPM strontium covering 4600 square foot house if entire home is same sheetrock ?