The varieties of language you use in different areas of your life are known as speaking or writing styles. Some particularly specialized styles, such as those used in the courtroom, or poetry, or the operating room, are known as registers.
The United States National Institutes of Health recommends testing vitamin A levels in people with celiac disease at diagnosis. This is because vitamin A deficiency is common in celiac disease. Deficiency can result from incomplete digestion, absorption, or metabolism. Normal absorption of vitamin A first requires digestion, or releasing, from food protein in the stomach.
Definition. Celiac is an autoimmune disease of the digestive tract. With Celiac, eating food with gluten damages little protrusions in the small intestine. These protrusions, called villi, absorb nutrients from foods. The condition affects absorption of all nutrients. Untreated patients often become malnourished.