Christina Hall shared a health update with her Instagram followers on Monday, after recently announcing she's been diagnosed with mercury and lead poisoning.The Flip or Flop star, 39, revealed she recently underwent a series of tests to get to the bottom of why she's been dealing with 'some unexplained health stuff for years.''I’ve been on a mission to get to the bottom of what's going on. I did an expensive and super extensive panel and I got all my results back,' she shared via her Instagram Stories.