Christina Anstead was recently forced to defend her weight after fans voiced their concern over her appearance, and now she’s given them a fresh update on her health.The Flip or Flop star shared two clips on her Instagram Stories inside a doctor's office with an IV in her arm. MORE: Christina Anstead stuns in pink bikini for spa day in the gardenChristina - who battles autoimmune diseases - informed her followers that she was receiving treatment from her doctor to boost her immune system and was