Mandy Moore Documents Her Upper Endoscopy to Test for Celiac Disease on Instagram

This is how Mandy Moore takes care of her health. On Saturday, the This is Us star documented her trip to the doctor to find out whether she had celiac disease, posting a snippet of the visit to her Instagram story. "Grog city," Moore, 33, wrote. "Just had an upper endoscopy to officially see whether or not I have celiac (only way to officially diagnose)...things are looking )." According to the Celiac Disease Foundation, celiac disease is an autoimmune disorder that negatively affects the way p...