7Meaning of High TSH Levels
High levels of TSH indicate hypothyroidism. This condition occurs when the thyroid gland releases too few hormones, which causes the pituitary gland to generate more TSH to compensate. Typical signs include weight gain, fatigue, constipation, depression, fertility issues, heavy or irregular menstrual periods, a reduced heart rate, thinning hair, dry skin, increased sensitivity to cold temperatures, and swollen neck or face. [8]
Meaning of Low TSH Levels
Low levels of TSH indicate hyperthyroidism, also known as an overactive thyroid. It occurs when the thyroid gland releases too much hormone, which causes the pituitary to release less TSH. Typical signs include muscle weakness, a rapid or irregular heartbeat, mood changes, weight loss, diarrhea or frequent bowel movements, difficulty sleeping, irritability, or nervousness. [9]
