Thyroid hormone is used to treat underactive thyroid (hypothyroidism). It is a natural product made from animal thyroid glands (usually a pig's). It replaces or provides more thyroid hormone, which is normally produced by the thyroid gland.
Foods high in potassium include bananas, spinach, carrots and oranges. Decreasing potassium intake can cause levels in the body to drop, but this is not a common reason for a decrease in potassium levels. Low potassium levels can occur when the body loses too much fluid due to illness. This fluid loss may occur because of excessive amounts of vomiting and diarrhea.
Hypokalemia is not commonly caused by poor dietary intake. The most common reason that potassium levels fall is due to the loss from the gastrointestinal (GI) tract and the kidney. Potassium loss from the GI tract may be caused by: 1  Vomiting. 2  Diarrhea. 3  Ileostomy: In some patients who have had bowel surgery and have an ileostomy, the stool output can contain significant amounts of potassium. 4  Villous adenoma (a type of colon polyp that can cause the colon to leak potassium). 5  Laxative use.