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.
1 High potassium, called hyperkalemia, causes similar symptoms. 2  Your potassium levels may be off without these extreme symptoms, however. 3  A 2008 study published in the journal Hypertension found that certain blood pressure drugs can result in low potassium levels, which in turn raises the risk of Type 2 diabetes.