Dr. Shiel received a Bachelor of Science degree with honors from the University of Notre Dame. There he was involved in research in radiation biology and received the Huisking Scholarship. After graduating from St. Louis University School of Medicine, he completed his Internal Medicine residency and Rheumatology fellowship at the University of California, Irvine. He is board-certified in Internal Medicine and Rheumatology.
Potassium deficiency: Inadequate potassium intake and hence potassium levels in the blood that are abnormally low. This state is termed hypokalemia. For further information, see: Hypokalemia and Potassium balance.